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

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

SHIFT_*grind* · 05-07-2008, 08:46 AM

Quote:

Originally Posted by drkidd22

get a 3in muffler?

Yes.

End of thread, thank you come again.

g6civcx · 05-07-2008, 08:53 AM

Leave it alone for now. As long as the downpipe bolts up to the cat, exhaust should be the last thing you worry about.

drkidd22 · 05-07-2008, 10:24 AM

Quote:

Originally Posted by g6civcx

Leave it alone for now. As long as the downpipe bolts up to the cat, exhaust should be the last thing you worry about.

That's the last thing I'm worried about and that's why the question

. I'm going to put it in as is with the 2.5in muffler and see what happens then.

Thanks.

05-07-2008, 06:42 AM	#1
drkidd22 BANNED Join Date: Jun 2007 Location: USA Age: 39 Posts: 146 Trader Rating: (0) Feedback Score: 0 reviews	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

05-07-2008, 08:53 AM	#3
g6civcx Post Whore! Join Date: Apr 2004 Location: Virginia, USA Posts: 5,764 Trader Rating: (5) Feedback Score: 5 reviews	Leave it alone for now. As long as the downpipe bolts up to the cat, exhaust should be the last thing you worry about.