Ok i know this sounds like a noob post but i just got my 2.5 inch catback in today and im excited. I plan on getting it installed tomarrow.

Now a while ago i had the RKsport 2 1/4 magnaflow cat-back on my N/A 02 cav and really didnt notice a difference..only in sound.

TOmarrow ill be getting my 2.5 inch cat-back installed on my 04 turbo cav, currently i have stock exhaust on it =(

How much of a difference will i notice if any at all?? did you guys install your turbo first then down the line install a bigger exhaust and notice a big difference?? I wouldnt bother asking this if my car was N/A but i know that turbo and bigger exhaust goes hand & hand for more h.p mods.

Oh yeah...another question..will putting this exhaust on effect my A/F ratio at all? as maybe a little more leaner now?

it''ll allow the exhaust to flow more freely with the less restrictive piping, while allowing the turbo to spool quicker and stay spooled longer.


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450WHP Turbo Ecotec swap in the works...

^^ yep...

faster spool, and more power..



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