transmissions are funny things sometimes. Even before my wavetrac and no tranny mods, I have had mine connect hard on a 2nd gear shift enough to spin the tires a kick sideways a bit but that is wot foot to the floor racing. It is normal on all the high performance cars I have ever owned. Hell, that is the excitement of it all... I would love the car to shift a little quicker, but not sure the bugs are all worked out yet for that mod. I haven't had any trouble with the cai, pulley, tune configuration. But once you add the manis the wavetrac, now you will be in the 400 crank hp area, but without the intake mod, I don't think you will be there...good luck either way...but I have been there done that longer than most with 2 cars, not 1....