ummmm.... i was at 417/39x with jlt, long tubes w/o cats and mufflers...aed tuned. dyno jet in 80 degree weater at about the same DA. but then again dynos are just a tool to use to get the car running good. your 388 might have beat my 417 on the track.
gearheads tuned my lightning an it ran pretty good, ran better with the amazon tune but not by much at all.
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