What exhaust to run to reduce back pressure.
05-22-2004 | 06:34 AM
#1
What exhaust to run to reduce back pressure. I am posting here vice the External Forum cause this is FI car vice NA.
I have a D1-SC seeing 8# with a cutout open. Before the cutout I was seeing less boost and 10psi of backpressure on a exhaust pressure gage. I am running Mac headers, ORP Y pipe and a 3" Flowmaster cat back with a "bypass" pipe between the inlet and outlet of the muffler. Before the cutout I made 522/486 now with the cutout open made 561/494.
Any advice on what system to run so I enjoy good flow and sound is great. Willing to redo the system from the exhaust port back to get both.
I have a D1-SC seeing 8# with a cutout open. Before the cutout I was seeing less boost and 10psi of backpressure on a exhaust pressure gage. I am running Mac headers, ORP Y pipe and a 3" Flowmaster cat back with a "bypass" pipe between the inlet and outlet of the muffler. Before the cutout I made 522/486 now with the cutout open made 561/494.
Any advice on what system to run so I enjoy good flow and sound is great. Willing to redo the system from the exhaust port back to get both.
05-22-2004 | 06:54 AM
#2
10 Second Club
Joined: Apr 2002
Posts: 1,755
Likes: 2
From: Cincinnati, Ohio
I run the Mufflex 4" with a Spintech muffler with dual 3" outlets. It flows with the best and has a very nice deep sound. You have to get the Y pipe adapter and weld it into your Y pipe so it has a 4" outlet. This actually gave me a free benefit because I had the SLP y pipe which banged on the floor. when I cut the Y I pulled the drivers side down some which solved the banging problem.
