When I was looking to replace my 2.5" F.I. TDX, the only other exhausts I even considered were Greddy TiC (2.75"), GTM (3.0"), and F.I. TDX (3"). I was looking for a turbo application as well.
If you are looking to go with a 2.5" catback, I would suggest looking at ARK and Fast Intentions. I have seen and heard the Greddy TiC, but not the SE. Good luck with your purchase!
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 2007 350Z NISMO #0618: Zerolift | UPREV | F.I. | Greddy | Competition Clutch | Injector Dynamics | Aeromotive | Pioneer | JL
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