[xtreme0209]

I had just installed a Hypertech in my 2001 Blazer Xtreme.... I had selected the shift firmness... Is this the same thing as adding a shift kit? Should I not add an aftermarket shiftkit with this shift firmness selected? What other upgrades can I do with the tranny with the Hypertech installed (Corvette Servo?)

 

[01black4.3]

Not the same. A shift-kit actually goes in the tranny and adds pressure. The shift-improver just adds it electronically. You can have both, but shifts will be hard, very.