Chevy and GMC Duramax Diesel Forum - View Single Post

**Dmax15** · 10-31-2009, 08:41 AM

4" or 5" it wont make a difference being that the downpipe is already 4". Personally I wish I didn't have 5", it looks goofy I think.

10-31-2009, 08:41 AM	eBay Motors #10 (permalink)
Dmax15 DF Sponsors Join Date: Oct 2008 Location: Washington Posts: 2,279	4" or 5" it wont make a difference being that the downpipe is already 4". Personally I wish I didn't have 5", it looks goofy I think. __________________ Screamin Diesel Performance- Scott 01-04 LB7 compound twin turbo kits www.ScreaminDieselPerformance.com 2002 GMC LB7 Cognito tie rods/braces, SC stage IV, MITUSA pump, ProFab manifolds/up pipes, EFI live by IdahoRob 12.34 @ 108.7mph with Twins!