Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum - View Single Post - Exhaust questions. 3in Downpipe 2in Cat 2.25in muffler

drkidd22 · 05-07-2008, 06:42 AM

Hello all, Before I put my SR into the 240sx I had an aftermarket muffler installed on it. The muffler has a 2.25in inlet pipe diameter and 4in outlet diameter and the core is 2.5in. Right now I have everything at 3in from the downpipe to the back for the SR, the only thing that's not 3in is the muffler inlet. What are my best bets here? get a 3in muffler? I have stock turbo, front mount intercooler and that's about it. No ECU mods or MAF or Injectors for now.

Thanks

05-07-2008, 06:42 AM	#1
drkidd22 BANNED Join Date: Jun 2007 Location: USA Age: 39 Posts: 146 Trader Rating: (0)	Exhaust questions. 3in Downpipe 2in Cat 2.25in muffler Hello all, Before I put my SR into the 240sx I had an aftermarket muffler installed on it. The muffler has a 2.25in inlet pipe diameter and 4in outlet diameter and the core is 2.5in. Right now I have everything at 3in from the downpipe to the back for the SR, the only thing that's not 3in is the muffler inlet. What are my best bets here? get a 3in muffler? I have stock turbo, front mount intercooler and that's about it. No ECU mods or MAF or Injectors for now. Thanks