Which Supercharger should I go with?

[H2_SUT_SC]

That sounds similar to what I did with my Denali. I used the Predator programmer to recalibrate shifting points and the truck now waits longer to shift into the next gear. It helped out tremendously as before it shifted way too soon and I was constantly fighting the truck to downshift/upshift/downshift/upshift. Now it just cruises until it hits a higher rpm and then shifts.

However, I thought with the reprogram of the CPU when they install the Magna, that it would do the same thing.