01SilveradoJakie

Have an 01 Silverado 5.3. Simple things, corvette servo, Transgo hd2 kit, tranny cooler, k&n cold air intake, 3 in exhaust, still stock manifold and cats. I just wanna know how much of a performance gain can I expect to see? I have him redoing the shift points, adjusting timing, speed limit, adaptive shift learning, and whatever else comes with tuning. Should I expect a big difference or barely anything?

Tuskyz28

I have seen a tune be worth 30 horses and 20 foot pounds of torque on a very mild motor running the factory cam.

murphinator

iTrader: (2)

above sounds like a reasonable estimate... removing torque management and adjusting shift times , shift pressures , allowing downshifts at slightly higher speeds , upping shift rpm's etc will all give tangible results as far as seat of the pants/driving impression , but if the person tuning is using a wideband and your fueling happens to be off and proper fueling is achieved then he should be able to get more timing in it that is where you stand the best chance of showing more hp in a dyno situation.

Either way if done well you will like the results