downpipe question
#1
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hey guys, i have an 06 evo IX, i have a greddy 3 inch catback atm, looking into downpipes right now, jus curious i noticed alot of people have a 2.5 downpipe goin into a 3 inch catback... is that a better setup than the 3 inch downpipe to the 3 inch catback? i dont plan to go big turbo anytime soon.. but it is planned on in the future. your input would be greatly appreciated
#3
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Yes get 3in most def. But just make sure you get a quailty one and don't be afaird to spend some money. Alot of cheaper ones rub and hit the underside of the car and gets annoying. I went with the DC sport 2-1 downpipe. its removes the cat section too and comes with a bung welded in for a wide band o2 sensor. just remeber to install ur cel fix in the rear o2 sensor location so u don't throw a cel.
#7
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To a certain point the 2.5 inch downpipe will produce more power on the low end and it provides more clearance for your exhaust system. However, I would just get the 3 inch downpipe so you don't have to go back and purchase it later if you decide to you want monster power like Emonz or myself.
#9
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How will a 2.5 inch downpipe make more low end when backpressure is not a factor?