[blackdemonzl1]

Originally Posted by JonDaddy82

Great gains! I also had great gains from my intake/exhaust with secondary cat delete. I didn't get any tuning done however. Only I would have done different is throw in a ported throttle body while you where at it.

Thanks! I think if you delete the secondary cat you don't have to tune it but if you delete the primary like I did a tune is required.

[blackdemonzl1]

Originally Posted by Junkyardspecial

Good little power jump, but still not sure why it sounds like your motor revs super slow. Maybe it is fuel who knows. But as long as youre happy thats all that matters.

I don't know man. I'll have to check other videos of ZL1 on the dyno and compare it with mine. I'm supposedly using the best 93oct available in the island.

[EDFHOBBIES]

Need to post important things like timing to see how much is pulled due to knock from lack of octane or the IAT sensors... with this we can see how accurate the dyno is by referencing other stock pulls all across the world..

When I was stock I did 553 on a mustang with my M6 with about 19 degrees my air filter area iat/fender was 99 and the iat in the blower was 120s before the pull. 93 octane from wal mart

maybe these will help..