torque before after.jpg

here's the final pull after tune. I have all the mods you have I think, plus the tweaked manifolds...so the before is everything BUT the tweaked manifolds, and the after is WITH the tweaked manis. You can see that they make quite a huge difference at the low end, but that by mid-range, they don't help all that much. At 2500 RPM, the before torque was 170.50 ft lbs, and after tuning for just the new manifolds torque was over 298 ft lbs. I hate shifting gears, so all that low end torque is awesome fun and sounds awesomely mean

The shop owner (peter@ispracing.com) stated that his dynojet consistently reads 10% below other dynojets by the way...so I take him at his word since he has nothing to gain by admitting that. The previous max whp w/all mods in my sig but prior to the tweaked manis/tune showed 340 whp, so taking him at his word that his dyno reads 10% low, that'd put the whp with the tweaked manifold/tune at least in the 365-375 whp range if it were run on the previous dyno.

I would go back to the old dyno to get apples to apples testing if I could, but that dyno has been replaced at the original shop, so there's no going home - sure wish I could though.