Join Date: Oct 2003
Location: West Lafayette, IN
MINTSICK is offline
Re: Test Pipes
There may be a slight MPG gain but there certainly will not be a 5% HP gain. I liked the sound of no cat with a free flowing exhaust as well, but then I got tired of the gas smell and flaky O2 simulator so I had a Spintech 3" high flow cat put on...it had pretty much the same sound as without a cat. Some people do have issues with the SES and a high flow cat some don't, the best way is to have the post-cat O2 sensor related trouble codes disabled using a custom tune (like wait4me or pcmforless).
2004 Silverado Z71 ECSB - |Silver Birch Metallic|5.3|Custom Single Exhaust|Method Standards
1993 Mustang LX Hatchback - |Reef Blue|5.0 H.O.|5 Speed|MGW Short Shifter|70MM MAF|MAC Shorty Headers|Pypes O/R X|Spintech Pro Streets|3.55's|
1984 El Camino Conquista - |Black|5.0L|Comp XE262H|Holley 570|700r4 swap|2.41 open rear|
Last edited by MINTSICK; 01-03-2008 at 01:07 PM.