boosting exhaust??

si-freak

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do i have to buy a cat back exhaust if i super charger or turbo charger my civic si coupe.?
 

s_crowley 17

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you should get the corect size piping, 2.25-3.5 is what alot of people use for Forced induction.. i would go to a local shop that does exhaust's and see what they think... and yes a catback would work too
 


TiiM iiS l3eAsT

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yes you should....other wise that stock exhaust is going to rob you of some power.....

go with 2.5" - 3.0"......i would go 3" that way you dont have to upgrade later on....i went with 2.5" and now i wanna go 3" lol
 

AE Motoring

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upgrade it to 3 inch, more flow, less restriction, but i would also tune it as well so u can benifit more from it
 


oddeb707

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you have a lot of exhaust threads
 

B16a2_ek

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im pretty sure i have a 2.25 right now connected to a rs*r ex mag. would that work or would i have to upgrade to a turbo muffler? and wouldnt 3" piping be loud as s**t?
 

LS1Bait

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im pretty sure i have a 2.25 right now connected to a rs*r ex mag. would that work or would i have to upgrade to a turbo muffler? and wouldnt 3" piping be loud as s**t?
Nope!

I have a 3" exhaust all the way back with no cat (but with a resonator and a fartcan) and it sounds great!
 

Billy.

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2.5" is fine to like 300hp, 3" is good to 600hp. a 2.25" exmag is no good for turbo b/c it is not a straight thru design and is too restrictive. it will rob your low-end power and create more boost lag b/c of the extra work the turbo has to do. i recommend the vibrant TPV turbo catback systems b/c theyre light as hell
 

LS1Bait

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just do a custom one...

plus, if you're looking for low end power, you definitely picked the wrong platform.
 


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