Mazdaspeed3 Turboback Exhaust System - Prototype Completed

[Captain KRM P5]

Thanks go out to tru-boost for loaning his car and his time for this project.

We've completed and installed our prototype turbo back exhaust system on tru-boost's mazdaspeed3. The system is a full three inch stainless steel system. Unlike some proposed systems, this includes a replacement downpipe. The prototype system uses a bottle resonator and a Vibrant TPV style muffler with a 4 inch angled tip. For emissions purposes we fitted the downpipe with a Vibrant high flow metal core converter. The car has not, after extensive testing, ever thrown a check engine light. This makes the exhaust system - in catted form - emissions legal.

There are minor fitment and contact issues that we will be ironing out before hitting production with these systems. Exhaust note is very nice and truly allows one to hear the powerband and the turbocharger. Acceleration is smooth and constant. We will be dynoing the exhaust system when the production model is ready. From my own drivability experiences I feel confident in two things - some tuning will be required to net the most on this car from any exhaust and there will be better gains on a catless system, regardless of how "high flow" it is.

Note to everyone changing out the downpipe - be careful with the primary o2 sensor. if you break it, its a $300 part and very hard to come by from mazda at this time.

We will be offering introductory pricing and while numbers are not set in stone, we aim to be at or under $1000 for a catless system and at or under $1300 for a catted system.

if you are interested in being a test car, please PM me or email me right away.

[bpt323]

sweet!!!! good effort put into a great product for ms3 owners!

[mdl247]

lol the first pic of the exhaust makes it look like a trucks turbo diesel exhaust. looks about to be id say a 5" exhaust system. but looks great hope for it to be out really soon, i want a louder system. i got bored and took out the second cat, i thought i would of thrown a cell but nothing yet and its been over 500 miles.

[justa4banger]

lol the first pic of the exhaust makes it look like a trucks turbo diesel exhaust. looks about to be id say a 5" exhaust system. but looks great hope for it to be out really soon, i want a louder system. i got bored and took out the second cat, i thought i would of thrown a cell but nothing yet and its been over 500 miles.


BUTT dyno tell you any difference? Just cause it didn't throw a cel doesn't mean your doing any better. Personally i like how the stock system is quiet.

How loud is this new system over stock?

[sixblade]

it looks great guys, i look foward to seeing what sort of gains you get.

[Captain KRM P5]

BUTT dyno tell you any difference? Just cause it didn't throw a cel doesn't mean your doing any better. Personally i like how the stock system is quiet.

How loud is this new system over stock?

yes, i'm aware that not throwing a CEL does not mean more power. i mentioned that to reassure all the anti-CEL folk out there. on the mazdaspeed6, quite a few people have not purchased downpipes out of fear of the dreaded CEL, even if it does not hamper performance.

the system is louder than stock. tru-boost was very happy with the exhaust note, but thats going to be subjective person to person. when i can get a vid posted that will give you a good idea where we are at sound wise


lol the first pic of the exhaust makes it look like a trucks turbo diesel exhaust. looks about to be id say a 5" exhaust system. but looks great hope for it to be out really soon, i want a louder system. i got bored and took out the second cat, i thought i would of thrown a cell but nothing yet and its been over 500 miles.

5 inch? haha no way. clearance issues make it very difficult to fit anything larger than a 3 inch system on this car.

[MSP608]

definitely looks huge in the first pic. should you use a flex section with this exhaust?

[justa4banger]

yes, i'm aware that not throwing a CEL does not mean more power. i mentioned that to reassure all the anti-CEL folk out there. on the mazdaspeed6, quite a few people have not purchased downpipes out of fear of the dreaded CEL, even if it does not hamper performance.
the system is louder than stock. tru-boost was very happy with the exhaust note, but thats going to be subjective person to person. when i can get a vid posted that will give you a good idea where we are at sound wise

5 inch? haha no way. clearance issues make it very difficult to fit anything larger than a 3 inch system on this car.

Personally i don't car whether a CEL is on or not, but where i Live the emission NAZI's do. I actually wasn't directing the question to you, but more to mdl247 to see if there was truely a butt dyno difference.
I know a larger DP will make a difference, its all about flow, the more OUT the more you can stuff in .......the bigger the smile on my face.

Maybe once the warranty is out on my ride i'll take out the lights that make of the CEL. then i won't have to look at it atleast.

[Captain KRM P5]

Personally i don't car whether a CEL is on or not, but where i Live the emission NAZI's do. I actually wasn't directing the question to you, but more to mdl247 to see if there was truely a butt dyno difference.
I know a larger DP will make a difference, its all about flow, the more OUT the more you can stuff in .......the bigger the smile on my face.

Maybe once the warranty is out on my ride i'll take out the lights that make of the CEL. then i won't have to look at it atleast.

luckily we will be able to avoid CELs even without catalytic converters :)


definitely looks huge in the first pic. should you use a flex section with this exhaust?

the stock exhaust does not have traditional flex sections, so we went with none on the prototype. we will be adding them for the production model.

[tru-boost]

exhaust note is on the louder side, not obnoxious but quite a bit louder than stock. because this is not the production model i will not post any sound or video clips. the production version will more than likely not use the same muffler as that is part of the clearance issues. overall is is a great kit though even with the cat, butt dyno likes it !! it spools up much faster and has awesome low end power.... it always did but now it is crazy !! i get so much wheel hop i had to also get a motor mount from protege garage !! i will be doing the install on that today, i hope this will reduce the hop, at least a little.

[peanutsparts]

well u be making a DP and exhasut w/out a cat?

[Tengo]

the first two pics make the thing look ginormous! lol. any pics of it installed yet? just wondering how the muffler setup looks like on the speed3.

[Captain KRM P5]

well u be making a DP and exhasut w/out a cat?

yes we will be offering them with no cat

[justa4banger]

No cel even with the CAT removed????? YES i'm still listening.......................
What does that entale?

I dunno about the rest of America, but personally i don't care how loud it is OUTSIDE the car, Its INSIDE at cruise on the freeway i'm worried about.
I removed the 2 mufflers on my VW and installed a spintech muffler (VR6) and wow it was AWESOME, BUT damn if you couldn't think to yourself while cruising 80 down the road. the droning effect SUCKED. Thats my only concern.........oh and price of course.;)

[sixblade]

I find cars drone a lot more with a cat then w/o it.

[flyrevs]

WOW a 5" Turbo-back? Sweet, man I bet this baby's got low back pressure.
It looks ginormus!!! Probably loud as crap though. Is it a droner ? http://www.mazdas247.com/forum/attachment.php?attachmentid=100713

[sandspeed]

dang nice work ken that looks like a nice exhaust. The downpipe section is great, i wish i had one that wasn't divided but oh well. I'm intertested to see what it looks like on the car when you get around to taking some pics.

[khaosman]

lol that first picture of it, it looks so huge.

[CosmicBlueMS3]

nice lookin piece! Ive actually heard it rev up and down a bit and I gotta say it sounds incredible compared to stock.
how many peices will the full TBE eventually be? will it be in 3 peices like the stock setup? will you be selling just the dp and test pipe or will it be all or nothing.
There is another guy who is making parts that match up at the stock flange locations and I kinda dig that idea of being able to peice together a system peice by peice.

[mdl247]

5 inch? haha no way. clearance issues make it very difficult to fit anything larger than a 3 inch system on this car.[/quote]

lol i know it isn't that i just basically sayin that the pic makes it look like one. my fren owns a 4wd shop and i'm always there helpin out and thats what some gibson's systems look llike

[mdl247]

BUTT dyno tell you any difference? Just cause it didn't throw a cel doesn't mean your doing any better. Personally i like how the stock system is quiet.

How loud is this new system over stock?

come on now i just wanted the exhaust a little louder for the sound didn't say anything about performance, just stated the fact that im glad i don't have a cel on, but as far as sound goes it got about maybe a couple of db's louder.

[Vermilion]

How hard was installation of the downpipe? I haven't been underneath my car yet so, not sure what everything really looks like.

[Captain KRM P5]

How hard was installation of the downpipe? I haven't been underneath my car yet so, not sure what everything really looks like.

honestly not that bad, just tight quarters. its removing the old one that is the biggest problem

[Pololo_MS3]

This is good news :)

I live in emission nazi place so a cat is a MUST and if the 4" tailpipe looks like a coffe can, then I guess this piece is directed towards "ricey" type of boys outthere :)

I love the fact the this car is a sleeper, a bit deeper sound from the exhaust will be great but no coffe cans for me... thank you very much :)

On the other hand, power differences must be substantial to justify the > $1K for this piece only. I know Ken's work is awesome but if you guys can come up with a 3 piece solution, this will be much better.

If not, I guess I'll have to get the MS exhaust that will soon be released as well, especially since I get the MS parts at cost :)

So I guess no more AMS for you Thru-boost? :) This means you'll be getting the XEDE now? lol

Great effort by all of you guys :)

Carlos

[peanutsparts]

This is good news :)

I live in emission nazi place so a cat is a MUST and if the 4" tailpipe looks like a coffe can, then I guess this piece is directed towards "ricey" type of boys outthere :)

I love the fact the this car is a sleeper, a bit deeper sound from the exhaust will be great but no coffe cans for me... thank you very much :)

On the other hand, power differences must be substantial to justify the > $1K for this piece only. I know Ken's work is awesome but if you guys can come up with a 3 piece solution, this will be much better.

If not, I guess I'll have to get the MS exhaust that will soon be released as well, especially since I get the MS parts at cost :)

So I guess no more AMS for you Thru-boost? :) This means you'll be getting the XEDE now? lol

Great effort by all of you guys :)

Carlos

This car is diffently NOT a sleeper. compared to the exhaust/looks on my g/f normal 07 M3.

When i took mine on a road trip from CA to AZ to break her in. I got a LOT of turned heads! I even had 2 guys wanting to take pics of it, while i was at the gas station filling up. And a SS cobalt reving on me at a light while in Phoenix.

Because all the media attention, this car will be know to a lot of people.

P.S. I love the Coffee can look. she will get a HKS series muffle soon.

[Captain KRM P5]

well, the size of the tip we are using is not alot larger diameter if at all than what you have on the car stock...

thanks for the compliments. as far as I know, our system is one of if not the cheapast system announced, with or without cat. we're hoping to make some adjustments to the car this weekend and then start duplication of it from this model. we are considering discounted "power bundles" of the exhaust and other parts we offer if purchased together.


This is good news :)

I live in emission nazi place so a cat is a MUST and if the 4" tailpipe looks like a coffe can, then I guess this piece is directed towards "ricey" type of boys outthere :)

I love the fact the this car is a sleeper, a bit deeper sound from the exhaust will be great but no coffe cans for me... thank you very much :)

On the other hand, power differences must be substantial to justify the > $1K for this piece only. I know Ken's work is awesome but if you guys can come up with a 3 piece solution, this will be much better.

If not, I guess I'll have to get the MS exhaust that will soon be released as well, especially since I get the MS parts at cost :)

So I guess no more AMS for you Thru-boost? :) This means you'll be getting the XEDE now? lol

Great effort by all of you guys :)

Carlos

[msp35]

any dynos in the near future?

[Captain KRM P5]

any dynos in the near future?

on the production model yes

[dcomiskey]

Any chance to have a resonated system that will NOT be louder than stock? Frankly, the stock system DROOOOOOONNNNNNES too much and I have no desire to make my car heard from 3 blocks away.

[MS3TR]

Looks promising! Can't wait to see they dyno results and a video/sound clip.


2007 MazdaSpeed 3, Turboxs Hybrid BOV, Turboxs Race Pipe, MS CAI on the way!
RIP: 2003 LS 350z, Injen Super SES, MSR 088's

[CTGrey02]

No cel even with the CAT removed????? YES i'm still listening.......................
What does that entale?


do a quick google on MIL Eliminators. http://www.mileliminatorsonline.com/ was the first link that came up.

[Captain KRM P5]

Any chance to have a resonated system that will NOT be louder than stock? Frankly, the stock system DROOOOOOONNNNNNES too much and I have no desire to make my car heard from 3 blocks away.

this system is resonated. putting more resonators into it will not really make a system quieter. for that you would need to add mufflers inline. going to a larger diameter system almost always makes it louder unfortunately.

[Blake]

looks great!

[peanutsparts]

what type of muffler/ tip will be on the exhaust system?

[03.5MSP]

Nice work, Now we need one of these for the MSP. Please Ken.

[Captain KRM P5]

what type of muffler/ tip will be on the exhaust system?

vibrant performance stainless 4 inch straight cut

[Captain KRM P5]

Nice work, Now we need one of these for the MSP. Please Ken.

how far are you from hatfield and do you want to be a test car

[peanutsparts]

vibrant performance stainless 4 inch straight cut

will u offer a kit w/out the muffler, like a tube only kit, like Truebends offers?

[Captain KRM P5]

will u offer a kit w/out the muffler, like a tube only kit, like Truebends offers?

do you have a link?

[peanutsparts]

do you have a link?

I will get u the link on Thursday. it's at my work, and I've Valetine's off.

thier website, will not show up on any of my sreaches

[Captain KRM P5]

and I've Valetine's off

you are a lucky man!

[wwpms6]

i think this is what hes talking about. http://www.trubendz.com/home.asp?producttype=exhaust&productfor=mazda3_tubing&pagetype=productIndex

[Captain KRM P5]

thats for an N/A mazda3, not a mazdaspeed3. even if it were for a mazdaspeed3, it is only a set of catback pipes. our system is a full turboback.

[peanutsparts]

i think this is what hes talking about. http://www.trubendz.com/home.asp?producttype=exhaust&productfor=mazda3_tubing&pagetype=productIndex

yeah thats da link, but don't the regular m3 and the MS3 have the same pipe route underneth the car?

[Captain KRM P5]

yeah thats da link, but don't the regular m3 and the MS3 have the same pipe route underneth the car?

for the catback parts ONLY it is similar. our system goes all the way up to the turbo. the trubendz system won't address any of that.

[redSpeed3]

I dunno about the rest of America, but personally i don't care how loud it is OUTSIDE the car, Its INSIDE at cruise on the freeway i'm worried about.

I'm in agreement here. This car has alot of tire noise intruding into the cabin as it is but a droning exhaust @ 50-80 mph would be too much.
Looking for the quietest exhaust with the most bang for the buck.

DP does look bad-ass though........(naughty)

[Rainman]

More great parts for the MS3.

Yeah!

R

[fourthmeal]

A good cure for droning is to use Dynamat or similar sound dampener on the interior surfaces of the car...

[Captain KRM P5]

with the setup we have right now, its not ear-murder even at 75mph

[peanutsparts]

will yall be offer a 3.25 or 3.5 set up anything soon, since some members will be upgrading w/ GTR turbos

[Captain KRM P5]

will yall be offer a 3.25 or 3.5 set up anything soon, since some members will be upgrading w/ GTR turbos

from the downpipe perspective, if you put anything much larger than 3 inch in there you will likely rub the firewall. clearances are indeed that tight.

[tru-boost]

there is no need for anything that big !! a 3" exhaust can support more power than you will ever make in this car !! with any turbo !

[Mspeed3]

awesome product

[Captain KRM P5]

we'll be sending it off for duplication this week

[zoom-zoomhatch]

Oddly enough parts keep hitting the market every time I decide I have just enough money to spend some on my car, so I keep staying pretty broke. Bet this goes on sell right at my next payday.