After having the new motor put in it has been popping on decel real bad. Wasn't gonna waste my time with the dealer from what most of us already know, unless you pay for the Dyno they wont really address the problem, just use canned maps. Well, I got out the laptop and started creating my own map (PCIII) and have not completely illiminated the pop but almost all of it is gone. It sounds so much better now. It has been a good day. Having trouble with the idle when it is cold, but it is running good when it warms up.