2.5" or 3" for a TT

Black370ZTT

Well with the 3in with HFC on the TT it sounds great. Its a lot louder, more exotic like, not raspy.

A 2.5 probably could get to 500hp, but if you ever upgraded to like stage 2 and so on, it would be better having the 3in and if you got 3in now no need to upgrade later on, but thats just my thought.

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AAM Twin Turbo Kit, 500hp/400TQ UPrev

"America is all about speed. Big, nasty, bad a$$ speed." Roosevelt

NYBladeZ

I could always sell the 2.5 cbe down the line I just want to make 500whp now and I'm wondering if it's better suited to have a 2.5 or 3in. right now it looks like we have a 50/50 split

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2009 Carbon Fiber/Red 370z aka Trish: Sports Package, Meisterschaft full catback, Fast Intentions Longtube Headers, Injen Long Tube Intakes, UpRev Tune: Sold
2008 Lotus Exige S Club Racer aka Bella, always leaves me smiling

2fast4thelaw

You wont have trouble making 500 RWHP with a 2.5" exhaust. A good free flowing 2.5" exhaust with HFCs will flow up to 550 RWHP. A 3" exhaust is unecessary unless you after the really big gains of 600RWHP and beyond.

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To the optimist, the glass is half full. To the pessimist, the glass is half empty. To the engineer, the glass is twice as big as it needs to be.

G37Sam

Where'd you get this data from? Yeah you probably could but you'd need to pushing like 15 psi with a stage 3 kit

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