Transmission and Supercharger dont get along too well.

[W1N]

I think it was Transgo. Allen Nelson got it for me along with the tune. Very simple and cheap part that will change your truck more than any other tune in my opinion. It costs around $150 + installation.

Pre 08 H2's are VERY slow to shift and to change that you need the PCM upgrade and the shift Kit. These go for about $700 total or less and will give you more performance than just SC alone. This is my opinion of course. So if you pay sever thousands for SC I don't see why you would't you upgrade you shifting and tune.

Hope this helps...