Shift Kit or HPP3 or Both?
going to spray 80-100 hp dry so i'm trying to protect my A4.
HPP3 is cheap (used) and has the shift firmness feature as well as other things like fan and speedo calibration and i probably need it for the speed limiter too.
Trans-Go shiftkit would be my choice also.
would going with both help more?
The HPP3 doesn't increase WOT shift firmness which is what you're looking for.

