ok can someone tell me the difference between the 3.. piping, flow sound etc.. lmk please !

 

can anyone help me?

 

bump

 

ITR exhaust is 2.25" piping with the least restrictive muffler.
LS Exhaust is the most restrictive piping 2" (ibelieve) with 30% less flow at the muffler
GSR is a 2.25" (<-- sum1 check me on that) piping with a less restrictive muffler than LS but more restrictive than ITR

ITR>GSR>LS

 

de duh dee

 

i'm pretty sure the GSR and Ls are 2" but the GSr muffler is jsut a lil better. ITR has the 2.25" piping.

 

thanks guys !

 

 

^cool

 

good post.

 

 

very nice print out u got a hold of there.

 

i had a 2.5 inch apexi n1 catback then switched to 2.5 SS piping to a type r muffler and i cant even tell the difference.

 

2.5 is way to big. you accually lose power here.

 

The way I see it the bigger the better, 3">2.5">2". or am i smoking crack?

 

You must be smoking crack. 2.25" is perfect for any Integra motor., or any mildly built motor, 2.5" would work good too. You need back pressure for the motor so 3 inch on a naturally aspirated motor is just loosing power. 3" on a turbo'd motor is a different story. Just take a look at most of the NA exhaust systems, 2.25-2.5" for NA and 3-4" on turbo'd cars.

 

very nice post.. now i see the difference.. so would that mean LS and GSR are the same?

 

Are you sure about this? I think you have scavenging and back pressure confused.

Another way to look at NA exhaust with typical builds.
1.6ltr 2.25".
1.8ltr~2.0ltr 2.5"
2.0ltr< 3.0"

Very Wild cams and extremely high compression ratios would change this.

 

see id say something here, but everyone would yell at me for putting duals on my b18

 

lol can i see a picture? haha

 

^ me too! i'd love to see that came out.

 

dang even got the layout for it...thumbs up!

 

Wow I had to laugh for seeing "you need backpressure" on a Honda forum and it's 2009!

Pretty sure GSR is identical to LS.

2.25 for an NA, for turbo go as big as is practical. "Backpressure" is irrelevant unless your pipe is crushed or something. The amount of backpressure between the stock system and the best aftermarket system is so small that there's no way it can account for the power difference. Pick up a Super Street from 2001 if you're interested to know more about it.

 

Flow Velocity is what's important. You want the exhaust to exit the muffler as efficiently as possible. You don't want any back-pressure.

On a turbo motor you want a free flowing exhaust with minimal resistance. Restrictive exhaust systems will severely affect spool time, and peak power levels.

Every setup is different, so you can not generically say that 3" is best for turbo, and 2.5" is best for NA.

 

Tell me why you think you need backpressure. The engine is not a two stroke.