i want to know the pros and cons of having a 3in cat ON a KA engine...nonturbo

 

Pros better flow, cons, none

 

with a 3 inch it will be really loud, but ive heard that 3 inch is to big on an N/A car. you should probably go with something like a 2.25- 2.75 diameter.

 

maybe with full 3" it will be loud. i dont think that loud personly. me and my buddy both run a 3" cat on our n/a ka-e's and the only difference it made was more torque on the butt dyno. you'll feel a bit of difference in the mid to top end range. i beleive ive read somewhere someone tested 3" full exhaust on a n/a ka and it actually made more power/torque as where most non F.I. 4 bangers would have lost power.

 

well i guess 3 inch is ok. ive seen acouple people have them on n/a ka's. its probably close to pushing it tho. i would go any bigger than 3in on an n/a. any bigger your loosing power instead of gaining.

 

 

A 3 inch cat isn't going to really do anything, won't be louder either. Exhaust piping is still small...

 

i run a full 3" exh on n/a ka... it is decently loud. will be running a full 3" turbo back shortly

 

wait are you talking about a 3in catback or a 3in catylitic converter. im with s13240 if your talking about the converter but if your talking about a cat back i still go with what i said.

 

I think it's prove that 3" gives more power gains than anything smaller on an NA KA.

 

which exhaust brand offers 3 in cat? apexi?hks? if not then which one does?

 

most aftermarket sr20 exhs are 3"

 

most ALL available "Turbo" exhaust systems on the market are 3". as with most N/A exhausts are 2.50"/2.75".
google is your friend.

 

Can you please answer one thing? When you keep saying cat, are you talking about a catalytic converter or a catback exhaust? If your talking about a full exhaust please say so, because saying your looking for a cat is something totally different.

 

catback not catalytic converter...