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I have the AFE magnum force stage 2 intake and at 3000rpm that thing roars louder than my magnaflow catback exhaust, literally. u can hear the rumble move from my exhaust to the engine bay. It sounds mean. And at 4000+ rpm both intake and exhaust just scream! First I installed the powerbox, then the exhaust, then the intake....the intake was like the missing piece to the puzzle and now my car surprises the hell out of people as far as the quickness. I have smoked a few 328's and I even raced a newer M3 which resulted in 140mph+ and the guy asking if my car was a 135. He couldn't gain on me, I was shocked! From an 80 roll we were dead even. From a 60 roll he had me by 1 car the whole time, but I should have downshifted to 4th. I stayed in 5th instead. He was an automatic, I am manual. Anyway I love that intake!
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