mazdadude
ZOOOOOOOOOM ZOOOOOOOOOM
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- '16.5 Mazda CX-5 Touring
Here in the US it is illegal, and considered a felony with thousands of dollars in fines to tamper with or remove the catalytic convertor.
Exhaust Modifications
- Thread starter GJ-Molestor
- Start date
Here in the US it is illegal, and considered a felony with thousands of dollars in fines to tamper with or remove the catalytic convertor.
Actually don't crackheads steel catalytic convertors to sell their metal or something like that?
mazdadude
ZOOOOOOOOOM ZOOOOOOOOOM
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- '16.5 Mazda CX-5 Touring
Platinum is the catalyst in a catalytic converter, but there are other metals as well, including palladium, rhodium, copper, nickel, cerium, iron, and manganese.
With the advent of battery operated metal saws, it becomes very easy for the thieves.
GJ-Molestor
Banned
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- 2011 BMW 528i, 2015 Mazda 6, 1995 Nissan Maxima Manual
I will try to get it all done by this week and report back when I get the ECU tune.
here is another video with a more aggressive tune. the first video I showed you was just a base tune.
https://www.youtube.com/watch?v=qEQw9Cf-6VY
not going to lie, thats quick. and that was WITH tire spin and only an intake which barely gains any power. with a cat delete and that same tune, this would be a properly quick car.
NelsonLewis
Banned
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- 16.5 CX-5 GT AWD w/Tech BRMica
Bwahaha. Good luck with enforcing that...
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NelsonLewis
Banned
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- 16.5 CX-5 GT AWD w/Tech BRMica
I have Dave's parts now. The heat shield definitely works. I'm thinking of sneaking on an OVT tune in sport mode only and 93 octane (I could prob swing it myself,but I trust Mat at OVT).
For the rest of the thread and power gains,the results are easily feasible. The 2.5L is a big 4 cylinder,and they could
Squeeze 250hp NA out of it if they really wanted,safely as well. But,that would require premium fuel and less MPG,not what most really want in this price frame or category. However,they could easily get 215-225hp and achieve what they want,and
I so wish they would've as the car could really use it IMO...Oh well...
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- 2014 QX70 AWD
Nelson- I won't deny it's possible with the tune. But I'm not surprised a lot of folks want hard evidence before spending their dough.
Isn't the new 911 GT3 pushing 500hp out of a NA 4.0L inline 6? 125 hp per liter = deliciousness. High winding engine = bliss. But it's a Porsche, so...
Isn't the new 911 GT3 pushing 500hp out of a NA 4.0L inline 6? 125 hp per liter = deliciousness. High winding engine = bliss. But it's a Porsche, so...
mazdadude
ZOOOOOOOOOM ZOOOOOOOOOM
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- '16.5 Mazda CX-5 Touring
Well, certainly posting about it on a public worldwide internet forum would not be very highly recommended.(smash)
NelsonLewis
Banned
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- 16.5 CX-5 GT AWD w/Tech BRMica
Bwahaha,whatever. They're everywhere around here. Come get you some...
NelsonLewis
Banned
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- 16.5 CX-5 GT AWD w/Tech BRMica
Hey,I understand why folks are skeptical,I really do,but I've seen it time and time again with my own eyes,so no worries here. Hell,I've pushed 200hp to the wheels out of a little 1.6L NA motor and turned it 9k+ rpm on the daily for 30k+ miles with zero problems. Honda was pushing 100 hp per liter over 15 years ago in stock form...
20hp isn't jack. As stated,it should've been done in the first place. I wish OVT hadn't been ran off as I'd take him up on his free tune offer he posted right before leaving and post the results.
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- 2014 QX70 AWD
Yeah, those old Si's were nice. Almost bought one myself back in the day.
NelsonLewis
Banned
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- 16.5 CX-5 GT AWD w/Tech BRMica
Best car I've ever had,and the cheapest new one also.
GJ-Molestor
Banned
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- 2011 BMW 528i, 2015 Mazda 6, 1995 Nissan Maxima Manual
Yes, but you are missing a key point here. At what RPM does the little 1.6 make max torque, and how much of it? This is where the 2.5 really shines. Its so usuable during daiy driving.
NelsonLewis
Banned
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- 16.5 CX-5 GT AWD w/Tech BRMica
What point am I missing? I never said anything about the 1.6 compared to the 2.5L. Not trying to compare anything between the two. Honda motors don't make s*** for torque...
GJ-Molestor
Banned
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- 2011 BMW 528i, 2015 Mazda 6, 1995 Nissan Maxima Manual
He mentioned that he had winter tires in the video. All the tire spin lost him a fair amount of time. Since he did not have enough traction, he was not able to brake-torque which would make the car even quicker still.
Unfortunately, cat delete is not possible for me, I'm in Cali. In two years, I will have to go for my first smog check.
I'm all for tuning the car, but the most I could do, is changing some of the mufflers.
On my last VW, I have deleted the small muffler, between the cat and the big muffler, and gave me some much nicer sound. It was a $40 mod.
I'm on CS springs, CS rear sway bar, custom(made by me) lower adjustable links, to adjust camber.
I'm all for tuning the car, but the most I could do, is changing some of the mufflers.
On my last VW, I have deleted the small muffler, between the cat and the big muffler, and gave me some much nicer sound. It was a $40 mod.
I'm on CS springs, CS rear sway bar, custom(made by me) lower adjustable links, to adjust camber.
GJ-Molestor
Banned
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- 2011 BMW 528i, 2015 Mazda 6, 1995 Nissan Maxima Manual
The muffler on this car is great Stuff, I dont want to remove it. It creates back-pressure which helps low rpm driving without being restrictive at all. I wouldnt remove the mid muffler (resonator) because that little bottle thing fine-tunes and exhaust sound while filtering out unwanted droning/frequencies. Sounds better with it in place. I would recommend putting back the resonator and see how that changes the exhaust note, it wont become any quieter but the sound will simply improve.
Why dont you do a cat delete and just put them back on in two years when its time for your smog test?
Here in Toronto, our emissions testing is very lenient, but most places will not pass you if youre fully catless unless you personally know the shop owner. They scan your car to ensure the cat is in a ready state, but they also stand behind your car while its idling to smell the exhaust which is an easy way to tell if the cars catted or not.
I am thinking of deleting the small second cat (which is before the larger main cat, right after the exhaust manifold) this is still illegal, but your car will pass emissions as long as that big main car is in place.
For my BMW, I removed the secondary cats and replaced the restrictive stock muffler with a magnaflow. Its a pretty decent way to get some sound and open up a few HP while still easily passing emissions. I got an emissions test with my secondaries removed because they dont look underneath the car here.
Oh, and another option for you would be to have a muffler shop weld two resonators where your muffler used to be with exhaust tips welded on the end. Worth every penny, you will love the sound!
GJ-Molestor
Banned
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- 2011 BMW 528i, 2015 Mazda 6, 1995 Nissan Maxima Manual
I was also thinking that, the rear bumper needs some bigger exhaust tips.
how is the noise level with this muffler? any drone at low-rpm?
yea, no more then 1-2HP gain from replacing the muffler and you're not gonna feel much of a difference until you start to rev it hard. it's mainly just a sound gain.
this is why I am considering to delete my cats, because it will sound good without being way too loud, free up a fair amount of horses and it will sound good with the stock muffler while being quiet and providing backpressure at low RPM.
you can also delete the small second cat for a bit more sound while still passing emissions.
I don't really notice any droning... it is louder than stock in most occasions other than just cruising RPMs where sound is almost like stock.
