| RE:"H" pipe set up, any gains? |
Subject: RE:"H" pipe set up, any gains? by DrEvil on 2008/1/13 16:22:35 Sounds as if you guys allready have this figured out but I'll add my experience. My previous vette, a 90 M6 car, had shorty headers, true duals with no cats and muffler elims. Talk about loud and unbearable. I drove it that way for 2 weeks, just long enough to get it dynoed. I hated the sound so much I was going to put it back to stock but first decided to try an H pipe and had the local shop fab one up. Huge difference, HUGE It made the car driveable. I actually had the chance to dyno it again a couple months later for a fresh set of before/after dyno comparisons on some new mods I was planning. I realize it was a couple months apart but the same dyno showed 7rwhp and 11 rwtrq increase. FFW to present car. The factory H pipe on the 96 isnt a true H pipe. The opening inside mine is only about 1" or so. Dont know why they didnt open it all the way up. For reference I now have longtube headers, 3 inch true duals, H pipe, and flowmaster super 40s. I havent heard a better sounding exhaust at idle than this. Resonance is pretty bad between 1600-1900rpm however. If I can get my hands on a resonator I'm going to put it in. |
