help on exhaust!?!

[civic92si]

3" down pipe with 3" straight pipe thermal exhaust (NO CAT no resonator )

Or 3" down pipe with 2.5 stock exhaust (with resonator RSR EXHAUST)


b18c BOOST 10 PSI semi built bottom end piston/rod which is better? option 1 or 2?

 

[baron340]

I vote 3" all the way back. Eventually you will get up to hp numbers where the exhaust will be holding you back. Might as well only do it once.

 

[kaepos]

I vote 3" all the way back. Eventually you will get up to hp numbers where the exhaust will be holding you back. Might as well only do it once.

x2

3" all the way back is better, especially if you're thinking about or going to up the boost... but I would keep the resonator and cat... that's just me.

 

[hardcore97]

3 inch all the way. its not so bad without a cat or res if your boosted since the turbo will quiet down the exhaust

 

[oddeb707]

Street - Go with cat.

Track - 3'' all the way.

No cat on the streets of Cali = getting your car taken away and bad for the environment.

 

[ragedeep]

Street - Go with cat.

Track - 3'' all the way.

No cat on the streets of Cali = getting your car taken away and bad for the environment.

/agree

 

[baron340]

Pssshhh... drop the cat. We're gonna get hit by a big meteor or a nuclear bomb before we can kill the ozone layer. Screw backpressure give that turbo room to run.

 

[hardcore97]

oh i didnt see that he lives in cali, in that case just get a 3 inch e cut out for the DP and run the smaller exhaust with a cat and res

 

[civic92si]

so second option?

 

[TiiM iiS l3eAsT]

Pssshhh... drop the cat. We're gonna get hit by a big meteor or a nuclear bomb before we can kill the ozone layer. Screw backpressure give that turbo room to run.

3" all the way FTW !!!

1st option !

 

[civic92si]

yeah....but the muffler shop didnt let...(i forgot to tell them it was for offroad) however i got my piping done with the cat. car is to loud..i should of get my resonator on too....just dont want to get caught with so much ILLEGAL good stuff!

 

[TiiM iiS l3eAsT]

thats why i love living in missouri....they dont give a s**t what you have done to your car lol...

 

[civic92si]

well yeah....that why CA SUCK! if you have a swap car you need to be BARED *CA STATE REF*

 

[TopGear_]

Not to thread jack but I had the same kind of question. I'll be running a low boost setup and was trying to figure out what size exhaust. I'm leaning towards 2.5" without cat.

 

[somejaykid]

i'll pick option 1

 

[civic92si]

option is done.

3" with high flow cat. just dont want to get caught...i hate where my gf live cop be harassing..

 

[baron340]

If you have a cat what is the problem?

 

[civic92si]

no if i go with option 1, and i get pull over without a cat thats 1500 fine

 

[SiRcivic27]

Since you have legal issues with your car, being in cali, it would be smart to do it the way that will keep your car out of trouble.

However, I was running 8lbs with a 2.25" system and made 221hp. When I got a 3" test pipe and 3" thermal exhaust I make over 250hp with the 2.25" dp still on. Just some info about how the performance will be with the smaller system.