HOW TO Install MazdaSpeed CBE on 2008 MazdaSpeed3 pics/vids [Archive]

View Full Version : HOW TO Install MazdaSpeed CBE on 2008 MazdaSpeed3 pics/vids

ZooMIN3

09-05-2007, 10:56 PM

Hi everyone. As most of you all know, I've already had installed my CAI and it sounds great.
The outcome of the power increase wasn't what I expected however it doesn't really matter to me what the
numbers are at this point. Besides, it was hot as balls that morning, maybe should wait till it gets a bit cooler
then re-dyno for better numbers? Like in ideal weather conditions. Anyways, here we go on the installation of the CBE.

Make sure you have these tools handy:
*Please be careful when working under your car, and make sure it's properly secured so that it won't fall on
you when you're underneath it!!!*

- Nice even work surface, like a leveled drive way, or a garage. (don't want that car rolling
down hill and crushing you when you're under the car untorqueing those bolts!) :shock:
- Ipod and portable speakers (never know when you'll need some tunes to keep you goin!)
- RotoZip w/metal cutting grind wheels (hack saw will work, only it'll take forever).
- Extension cable for more reach with the RotoZip.
- Good socket set with ratchet. (you'll need a couple of sockets from this set ranging from 14mm to a 9/16 socket.
Make sure you have a set of deep sockets in your socket set.
- Jack and Jack stands
- Wheel chocks

Not needed,but recommended:
- Locktite
- flame retardant cover alls (you'll see why in bit)
- protective glasses/goggles (want anything falling in your eye? didn't think so :wink: )
- mechanix gloves (incase your exhaust system is still hot, or so when you're
untorqueing bolts, you won't bruise/cut a knuckle against all those metal surfaces!)
- Flat head screw driver
- Spray on copper gasket (bought at local automotive store 5 bux plus tax)

Here we go folks:

First you'll need to turn on some tunes with your handy dandy Ipod, and portable speakers as shown below. 8)
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3029.jpg

Next go ahead and chock the front wheels.
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3031.jpg

Jack up your car, and put the load on your jack stands. Be careful to make sure the support
is on the rails that jut out like rails. That'll hold the weight of the vehicle. Don't put the weight
on the actual side skirt of the car, it'll probably come up.... (wink)
Here's a sneak peek:
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3030.jpg

http://i61.photobucket.com/albums/h69/Focusondz/DSCF3033.jpg

Once you get both sides of the vehicle jacked up, and secured; you'll need to crawl under
the car, (on your back for better view and less strain on your neck) and look for this panel under the car.
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3036.jpg

You'll be undoing EIGHT (8) bolts that look like this.
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3034.jpg

Undo these bolts and take off this plate. Be-carefull, it's sorta heavy, about 5-8 lbs, its
not much when you're standing up, but when you're lying on your back, and have to set it
aside as if you're doing a flat bench fly's, it'll fall quick. So handle it with care.
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3034.jpg
Here I used a closed end ratcheting wrench. These are handy, and if you can get a set, get one.
You'll see why when you use them in tight spaces.
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3037.jpg

Now you'll have access to these bolts that hold the rear portion of the stock exhaust to the secondary
catalyc convertor. Undo both of these, and set them aside, you'll use the bolts and springs again for the new CBE.
Here is where you'll need to use some oomph to get these bolts loose. The gloves and the closed end wrench
helped here a lot. TRUST me.
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3038.jpg

Once you do the easiest part of the unbolting, just leave the piping there in its rubber hanger for support.

The next step will require you to cut the exhaust at an elbow bend just after the first resonator/muffler.
Here you'll need the rotozip, and your extension cord for that extra reach. Oh and the grind wheel for this step.
Here you'll definitly want some eye and glove protection. 8)
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3042.jpg

Here is the location where you'll be making the cut. It's made here becuase you'll have to
manuever the butt end of the exhaust out towards the back of the vehicle. Snaking it out through the rear suspension.
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3039.jpg

Here is the finished product after 5 minutes or so of cutting.
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3045.jpg

http://i61.photobucket.com/albums/h69/Focusondz/DSCF3044.jpg

You'll need to take your flat head screw driver and take this DONUT gasket off of the secondary cat and
install the new one that came with the MazdaSpeed exhaust. It'll take some effort, but it comes off. :)
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3053.jpg

Here is what the stock exhaust looks like with the Speed exhaust side by side.
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3047.jpg

http://i61.photobucket.com/albums/h69/Focusondz/DSCF3051.jpg

http://i61.photobucket.com/albums/h69/Focusondz/DSCF3052.jpg

Here is the gasket spray that was mentioned in the not needed but recommended part of the listing.
Spray it on, and be sure to coat the flanges and all gaskets really good. It'll help make a good seal to keep the parts
from leaking exhaust gases. (Be sure you have a safe breathing distance when using this product.
Note: I coated the flange on the CAT as well as another coating over the new DONUT gasket for added measure of sealant.
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3055.jpg

Put a coating of the copper spray gasket here as well:
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3060.jpg

Here with the gasket that came with the system for the rear portion of the exhaust,
again with spray on gasket:
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3066.jpg

On the flangs for the new exhaust system, if you're concerned about the over spray,
use news paper or something, I'm not worried about it at all, so no worries. :P
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3061.jpg

I even sprayed some inside the pipe where the muffler joins with the forward portion of the exhaust,
that way when you clamp it down, it won't leak. At least that's the idea anyways.
before
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3062.jpg
after
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3063.jpg

Here are shots of where the rubber hangers are to hang the new system in place.
I forgot to take a pic, but the first hanger is just after the secondary CAT.
Hang the forward piece of the system there.

Next hang the muffler portion at this rubber piece.
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3064.jpg

Here is the one for the forward part of the rear assembly.
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3058.jpg

and the last rubber hanger where the tip hangs.

http://i61.photobucket.com/albums/h69/Focusondz/DSCF3057.jpg

Here you'll start bolting up, and piecing together the parts. Make sure to keep all
bolts and connections only snug enough to where you have some play in the parts.
That way when you need to re-position something on
the piping, it won't leave you wondering why it isn't lining up correctly.

http://i61.photobucket.com/albums/h69/Focusondz/DSCF3067.jpg

http://i61.photobucket.com/albums/h69/Focusondz/DSCF3068.jpg

http://i61.photobucket.com/albums/h69/Focusondz/DSCF3071.jpg

Once you have everything put togther and lined up correctly, tighten everything down.
Now I know they had on there a certain tq spec, but everything on there was tight when
you took it off. I just tightened it as tight as I could get it. Like, Tight as a tiga. (wink)
Put locktite on all the bolts before bolting up for extra tightening measure.

For the rear bolts, you'll need a wrench for the nut and a socket wrench for the bolt.
Hold the nut in place with the wrench that way it won't keep spinning on you when you try to tighten
up the bolts. Snug down one side, then the next. Snug them evenly as you go down.
4 turns for one side, then 4 turns for the other side and repeat. (just an example, you can
go as many turns as you want.) That way when you get them tight, the compression will be
evenly distributed on the entire flange once you go to seal the deal. :P

SEE?! (wink)
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3070.jpg

Here is what you should end up with once done.
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3072.jpg

http://i61.photobucket.com/albums/h69/Focusondz/DSCF3074.jpg

http://i61.photobucket.com/albums/h69/Focusondz/DSCF3075.jpg

The new tip:
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3077.jpg

http://i61.photobucket.com/albums/h69/Focusondz/DSCF3078.jpg

The directions said to turn the car on, and place a rag to muffle the exhale of the gases.
This is so you can hear for leaks in the system before taking it off the jacks. If you hear nothing,
then you're good, if you hear something, locate the spot where the leak is coming from, and re-tighten.
Again, Check everything for tightness, and make sure everything is good to go before taking your car off the ramp.
Put that plate back under that car, and snug down those bolts. Clean up after yourself.

Here is the sound of the exhaust, sounds real good!

http://i61.photobucket.com/albums/h69/Focusondz/th_DSCF3079-1.jpg (http://s61.photobucket.com/albums/h69/Focusondz/?action=view&current=DSCF3079-1.flv)

It took about an hour and a half getting this done. I'm sure it'll go much quicker if I didn't take
my sweet time to take pictures. This was fun to do, and I hope this will help you all when it comes
down to you all installing your own Cat Back Exhaust. I'm sure this is the same way for any other
CBE install on the Speed 3. If you have any questions, or extra tips, please post away!! Have fun,
and be safe when working under your car!!

-J

civic si hb

09-05-2007, 11:03 PM

Wow, great write and pics and vids too. A mod should sticky this... Thanks for sharing and taking the time for others to learn.

ZooMIN3

09-05-2007, 11:07 PM

Thank you!! And your welcome!

I love this stuff! lol

-J

serialtoon

09-06-2007, 11:06 AM

Excellent write up! WOW! Alot of the How To people should take lessons from you!

ZooMIN3

09-06-2007, 02:18 PM

Excellent write up! WOW! Alot of the How To people should take lessons from you!

Thanks a bunch, I appreciate the props! I have an 01 Ford Focus that I did all the mods to over the past few years. Believe me, that guinea pig must've hated me for what I did to it.. but loved me after fixing it up! lol Now I just apply my know how onto my new car! hehe!

-J

knowledge007

09-06-2007, 03:07 PM

Nice write up. Good job...

But personally I do not like CBE's and plus the mazdaspeed tone does not catch my attention. But none the less great job.

ZooMIN3

09-06-2007, 04:08 PM

Nice write up. Good job...

But personally I do not like CBE's and plus the mazdaspeed tone does not catch my attention. But none the less great job.

Thanks!

CBE's are good to go if you're keeping your car SMOG resistant..lol
By the way, how does your exhaust sound? I'd like to hear a comparison. If anything, post it here so we all can get an idea. Thanks!

other than that, another route to take would be to install hi-flo cats....I'm sure it's the same outcome as it is with a DP/TP, no?

Besides, if its smog legality you're looking for, hi-flow cat is a way to go... i see you have one too? nice. I'll be doing that one day...

::go's to search for hi-flow cats for mazdaspeed3::

-J

bushrat

09-06-2007, 04:55 PM

The advantage of living in Florida, no CARB standards or emissions testing. However, the legislature is considering adopting CARB.

BSTD3

09-07-2007, 10:27 AM

Great write-up ZooMIN3 (http://www.mazdas247.com/forum/member.php?u=38011) (thumb)

clos561

09-07-2007, 10:40 AM

The advantage of living in Florida, no CARB standards or emissions testing. However, the legislature is considering adopting CARB.

they used to have testing but they got rid of them......i remember when i was really young i would wait in loong line with my mom so she can get her car tested.

nice write up. sounds good

knowledge007

09-07-2007, 10:59 AM

Rev:

http://www.youtube.com/watch?v=3-q9rUD2Rmo

Cold start:

http://www.youtube.com/watch?v=8T_LNa6LRFw

A nice little run:

http://www.youtube.com/watch?v=k_SDLbuhU_s

Enjoy... (glare)

///M Compact

09-07-2007, 11:56 AM

Great write-up and pics!!!

MS3ICA

09-07-2007, 12:24 PM

nice!!! i hope someone does a wite up like this for the stanback

ZooMIN3

09-07-2007, 01:49 PM

nice!!! i hope someone does a wite up like this for the stanback

Thanks everyone!!

I'll have to check out this stanback...never heard of it. Can't look it up now, at work...lol

-J

ZooMIN3

09-07-2007, 03:20 PM

Rev:

http://www.youtube.com/watch?v=3-q9rUD2Rmo

Cold start:

http://www.youtube.com/watch?v=8T_LNa6LRFw

A nice little run:

http://www.youtube.com/watch?v=k_SDLbuhU_s

Enjoy... (glare)

nice, too much vroom in the cabin for me though. is it like that on Highways also? I can feel my head droning...VRAAAAAAAAAAAAMMMMM when driving long distances.

I like it, just not for me. (drinks)(burnout)

knowledge007

09-07-2007, 03:25 PM

Thats with the two front windows down. Not much drone on the highway maybe a slight increase from stock. Prolly the same as you now. The only thing is that you know right off the bat that this is not just aCBE if you know what I mean....

SNike05

09-07-2007, 03:32 PM

Good job on the pictures, very sharp.

MS3ICA

09-07-2007, 03:51 PM

Thanks everyone!!

I'll have to check out this stanback...never heard of it. Can't look it up now, at work...lol

-J

its the cp-e standback for the ecu, its on the forums if you do a search

ZooMIN3

09-07-2007, 05:27 PM

its the cp-e standback for the ecu, its on the forums if you do a search

oic...stanDback... roger, I saw stanback... I was like hmm...I'll have to check it out! lol yeah, haven't had time to search yet. (rofl)

Thanks Knowledge for the input, and I know what you mean. :-)

-J

LENNY127

09-08-2007, 11:27 AM

ZooMIN3

09-08-2007, 12:07 PM

I have been contemplating buying a cbe and now that I have heard the mazdaspeed one I am sold on it, performance will be the same across the board on all give or take a hp or two and the sound is loud enough to add to the car without it sounding over the top., my question is this , do u need a cutting tool to remove it ? could it not be done otherwise? asking cuz I am low on tools and whenever I do a mod I consider the cost of the part plus the tools that I do not have ...anyways great job on it and mr cobb has a couple of months to get the ap out or it will be a cbe for me next.

There are two ways to do it.

The easiest and fastest way to do it, is to cut the stock exhaust. You'll need either a hacksaw, or a rotozip tool that you can buy at your local hard ware store. I've had mine for about 4 years, and I only whip out for certain things...this being one of them. :-)

The other way is to drop the entire rear suspension JUST to get the stock exhuast out. This route will allow you to take it out as one whole piece and still be ablt to re-use it.

You'll still be able to reuse the stock one that has been cut, it'll just have to be re-welded together. Hope this helps.

-J

LENNY127

09-08-2007, 12:39 PM

that answers it, its all welded in as a unit not pressed in pipes into each other like aftermarket systems.

knowledge007

09-08-2007, 01:07 PM

Well the problem with the exhaust setup on the MS3 is that its path goes directly under the driver rear suspension. And to take it out as one peice is nearly impossible. Only way out is cut.

Same goes for aftermarket parts. My TBE was only two peices for the CBE because of this.

ZooMIN3

09-08-2007, 02:27 PM

^yup, what he said about it going through the rear suspension.^

The stock can be taken out as a whole, you just gotta drop the rear suspension, PITA I bet. I was going to try it, but without a shop manual, I won't attempt it. Those shop manuals go for 200 bux, at least that's what the dealership quoted me! (shock)

-J

flipstylex

09-08-2007, 04:30 PM

nice write up.

BSTD3

09-08-2007, 10:17 PM

I had my dealer remove my stock exhaust as one solid piece. They did drop the rear suspension to get it out. Got it for sale if anyone is interested ;)

gbalanced

09-09-2007, 12:35 AM

Another reason someone would be inclined towards the CBE is also for warranty related issues. Granted we don't get near as much power with them, but I am willing to bet that a lot of us don't want to have to swap back to the turbo back system whenever we need to take the car in for warranty related repairs.

flipstylex

09-09-2007, 04:17 AM

gftrh

ZooMIN3

11-24-2007, 02:44 AM

bump for any DIYerselfers. lol

-J

RichB

07-03-2008, 10:09 AM

Any reason why this tool can't be used to cut out the old exhaust?

Tail Pipe Cutter (http://www.autozone.com/R,NONAPP265/store,1120/shopping/accessoryProductDetail.htm)

wisniaPl

07-04-2008, 12:47 AM

Bonafide_Spd3

07-04-2008, 12:55 AM

CnoTataymo

07-07-2008, 03:36 AM

I can't wait to get a cbe. Emissions in cali are probably crazy so I gotta wait to see what I can do out there before I do it. I hope I can atleast get a high flow cat with a cbe. Awesome write up though, I thought about getting a ms cbe but still waiting

You can always get a CBE. The MS3 runs 2 cats so you can always get a race pipe without a cat and still have the stock cat thats on the downpipe and be legal.

dkswim

07-09-2008, 01:23 AM

(drinks)

ZooMIN3

08-05-2008, 07:44 AM

(spin)

copperkid

09-13-2008, 03:51 PM

What are the HP and torque gains for the mazdaspeed exhaust?

ZooMIN3

09-21-2008, 07:44 AM

What are the HP and torque gains for the mazdaspeed exhaust?

next to zilch really. to get the gains, you need to do the whole system from the turbo on back. so that means you'll need to take out both cats that come on the car. Or use a hi-flow cat that is available with a down pipe from one of the companies that make it for our car. i need both cats so I won't need to worry about cali emissions. I know i can take one out, but if nahhh... (drive)

john blutarski

09-21-2008, 12:05 PM

Thanks for the write up! I'll be trying this in a few weeks for my HKS CBE. I wonder if I can use a reciprocating saw to cut out the stocker?

Saitech

09-21-2008, 03:02 PM

Thanks for writeup. I cut the stock piece with a dremel and a diamond cutter thing, worked pretty good. Didn't expect to get a power increase from cbe but for the first time, I got torque steer. Could have been just the ambient temp and road imperfections, but my friend said the same thing when he drove. The sound is almost stock, which suits me.

ZooMIN3

09-22-2008, 02:32 AM

thank you for the props guys!

@ John; if you can fit that reciprocating saw in there, then you should have no problems.

@Saitech, there may be a slight increase, without an actualy dyno; baseline and after, there is no way to tell really. however your car may have gained some juice from the CBE upgrade! yey yey to more power!

pimped3

09-29-2008, 04:15 PM

Where did you get the Mazdaspeed CBE? I want to get one that's not nearly $700 like the ones from dealers

ZooMIN3

09-30-2008, 12:05 AM

Where did you get the Mazdaspeed CBE? I want to get one that's not nearly $700 like the ones from dealers

I got mine from the dealer, if I'm not mistaken, it was around 500-550... it was last year when I got it...lol

nighthawk358

10-29-2008, 11:09 AM

is there a way to do this without cutting the stock exhaust?

SPEED3TYPE2

10-29-2008, 11:23 AM

I just cut oout all 3 resinators..save $700 and it sounds MEAN!

nighthawk358

11-07-2008, 11:24 PM

i have the cpe cbe but havent installed it yet.. is there a way to remove the stock cbe without cutting it?

ZooMIN3

11-18-2008, 12:01 PM

i have the cpe cbe but havent installed it yet.. is there a way to remove the stock cbe without cutting it?

yes there is a way, but it involves dropping the entire rear sub frame assembly. lot of work, but i'm sure its well worth it. i didn't have the time to do that, so i just cut it off. lol

AjaxUSA

05-01-2009, 08:24 PM

I know this is old. Finally got my MS CBE. I got it used from a buddy. The donut is obviously used and the gaskets are melted on the exhaust connections.

Should I buy new ones? If so, where from? Mazda dealer or do Pep Boys or similar store sell them?

Thanks guys.

Pro5Racer

05-23-2009, 04:38 PM

My Mazdaspeed CBE and SU Test Pipejust came in from ********** and I CAN'T WAIT to install this. 1000 THANK YOU's for this write up!!! I've always paid someone to do this install but now I can give it a shot!!

I've done many DIY installs on my previous 3 and this MS3 and I've ALWAYS wanted to do my own CBE install. You made it look less daunting than I imagined. Hell I've done spring + strut installs but the CBE looks EASY compared to that!

I'm just nervous about the cutting and also a question: Was it a pain in the ass to get the CBE off the rubber mounts? I've heard some stories about it being kind of stuck on there and needing needlenose pliers to get them off.

Silver Ecstasy

05-24-2009, 01:03 PM

I also got my MSCBE my SU and I installed it today with my dad at his shop. I'll tell you this, I have a huge respect for people who have installed this on jack stands, because, I cannot imagine doing it that way. Having a lift was obviously so much easier, and I understand not everyone has access to one but it made life a lot easier.

Some quirks:
1) The heatshield WILL be an issue. The piece that connects the muffler to the tailpipe will hit the heatshield under bumps. We noticed this right away and tried to adjust as much as we could on the OTHER side of the muffler (the part that you use a clamp on). Also, we used a longer prybar to bend the heatshield out of the way as much as possible.

2) There is a marking on the tubing to line the muffler up to the forward pipe. Problem is, if you line it up perfectly, it pulls hard on the hangers that hold the muffler. The other problem is, line it up too far away from the marking and you will leak. Infact, mine has a very SMALL leak on the top section of the pipe, near the clamp. We've tightened it and adjusted it, used a different type of clamp and it still leaks.

From my dad's recommendation, it's going to seal up over time, simply by rust that will form over it, so it shouldn't be an issue and I felt no hesitations or stutters from it. It's audible only if you're putting your ear next to it, and you can only tell there's a leak by putting your finger over the top of the clamp.

2) It will smoke and stink like a SOB. Atleast that's my case. We had it idling while on the lift for about 20 minutes and white smoke started. Then once I started driving, at stop lights, it would puff. I haven't been back out since but it eventually went away and got real intermittent. It doesn't smell the greatest, but i'm hoping it's only temporary, as i'm sure it is.

3) We did not have to use the new exhaust gasket donut. It was still completely useable and infact, the new gasket donut was smaller in width than the one on the car. We also did not use the new catalytic flange nuts. The ones originally on the car were fine.

I'm glad someone actually revived the thread. I was concerned the original posters would no longer be active on the forums since this was from 2007. Either way, it helped in my research and installation, so thanks OP!

skrappyyy

05-25-2009, 02:42 AM

yes there is a way, but it involves dropping the entire rear sub frame assembly. lot of work, but i'm sure its well worth it. i didn't have the time to do that, so i just cut it off. lol

Has anyone done a how to in removing the exhaust without cutting it?

dkswim

05-25-2009, 03:47 AM

you should be able to get new donuts from the parts store or an exhaust shop, if not use the mazda dealer the is a sponser on this forum ive found they are way better on pricing then my local dealer and generaly ships out in a day or two.

realisticly there is no reason to not cut it out. if woried about resaling it only cost $20 to have rewelded.

if any isues with removal with hangers spray with lubricant oil and will come off easialy and the hard ones you can give a quick spray bafore reinstall.

skrappyyy

05-25-2009, 03:37 PM

Kain

05-25-2009, 03:55 PM

Instead of dropping the subframe over and over to swap uncut exhausts, you're better off paying a shop the $20 to weld it together and save yourself a crapton of hassle.

skrappyyy

05-25-2009, 04:03 PM

Instead of dropping the subframe over and over to swap uncut exhausts, you're better off paying a shop the $20 to weld it together and save yourself a crapton of hassle.

Yeah I guess so thanks!

MS309MGM

05-26-2009, 05:55 PM

Thanks for the useful thread.

okkin

06-04-2009, 06:44 PM

i am looking to get the mazda cbe for my speed. Ive seen the video that is on the first post, the exhaust sounds great, but can anyone tell me how much louder the mazda cbe is compaired to stock? I know the Cobb cbe is only a tiny bit louder than stock and I am looking for something with more volume.

Silver Ecstasy

06-04-2009, 08:25 PM

The MSCBE is virtually silent inside the car. You obviously can tell you have exhaust but it's not louder than stock. Stock CBE did this terrible drone off throttle on the e-way. That is completely gone with the MSCBE.

I lower my windows and enjoy the Subie-style sound!

Wholemilk

06-20-2009, 12:31 AM

i just installed my hks cbe and all in all it was a pain in the rear having to cut it then to put the spring bolts back on...the spring bolt is what took the longest because....well the springs fight you but it was worth it, both my arms are numb but it sounds incredible. if you have the right cutting tool and a new blade or whatever your using it goes through the exhaust like butter.