Hey I got a 95 gsr in my hatch.Its stock with just bolt ons. What exhaust size should I get?? 2"...or 2.25"... or 2.5".... or 3"..??

my buddy said I can run a 3" with a good tune and not lose power. WHo's right???

thanks guys

 

3" is overkill...2.25 or 2.5 is fine

 

60mm is good. Anything bigger is too big.
http://www.team-integra.net/sections...p?ArticleID=48

 

3 is too big for basic bolt on. u probably lose hp. and btw are you talking from the axle back or the cat-back?

 

3'' is too big for bolt ons for sure... Its like when you use a bigger intake manifold (Venom) on a stock car, too much air flow.. it just chokes on it and there in lies power loss.

Just go 2.5.

 

Don't you have a five inch on your car speedy??

 

yeah but it was completely necessary for my na sohc.

 

2.25-2.5, and the Ti articles should giv you a good idea as well.

most catbacks are 2.36-2.38 and 2.36 being the most common


if you are doing customthen you'd should do 2.25 or 2.5 mandrel bending.

3" crush bent is supposedly equivlent to a 2.5 mandrel but it still is going from 3 > 2.5 on the bends and back to 3... not even flow

 

2.5 with a test pipe ftw

 

2.5in/63mm is what the guys at KMS recommend for ITR motors idk about gsr

 

Here are some pictures of a custom 2.5" Exhaust.


SMSP Header to the SMSP High flow cat


Extra O2 bung, if I ever have to go back to OBD2





I took off a Comptech Cat-back. ~2.36"

If you are planning to stay with bolts-ons on your car you will never see the benifits of a 3". Keep in mind 3" will sound louder and weight more. If your planning major engine work, lets say over 225whp a 3" will be good.

 

I'm talking about the cat back

 

test pipe you mean no cat just a pipe instead? we did the on my friends gsr with a 2.5 cat back and it seamed like we lost power .......idk

 

hey btw what exhaust is that? I mean the axle back? es tunning?? cuz thats what I have

 

^^Just put a cat on my car for emmissions and it feels like there is more torque in lower rpm. But in higher rpms 3000+ definitely feel less power than before with a test pipe.

 

Vibrant
I'm pretty sure this is it.
http://vibrantperformance.com/catalo...oducts_id=1161

 

Definitely do not run 2.50 or 3 inch unless you go turbo stick with 2.25.

 

I can't believe this thread. This is the stupidest thing ever, Exhaust does NOT increase your performance by any noticeable amount unless you've got a build and are required to put it on. You're just drawing attention to yourself. I would save your pennies and go for a more useful mod personally.

 

60mm exhaust is good upto 220whp... just get a good aftermarket exhaust...

 

If you wanna make power.. reguardless of what anyone tells you..

you have to run 2.5+.. I run 3'' on my daily and have even had thoughts of going 4''..

 

This guy obviously has no idea what an exhaust does.

 

good luck bro with no back pressure I'll stick to 2.25

 

yes I felt a difference.

when you take a crap in the bathroom, you want it all out in no time. thats somewhat same with a car

 

^LMAO

but you also don't want 3"+ on NA poop tube

 

All MOTOR knows his stuff he has a ton of dyno time to back up his claims as well.

On dynos I've never seen a loss of power going to a larger 3" exhaust tuned it was always significant gains.