Shift Kit VS Computer Tune
I have the HPP III and it asks you if you have a shift kit installed before you increase shift firmness!
I suppose that's because they don't want you to over do things and increase the pressure by to much!
I suppose that's because they don't want you to over do things and increase the pressure by to much!
A shift kit is probably better, but if you know what you are doing as far as tuning (i.e. not using the hypercrap) you can get really firm shifts with minimal risk to the trans.






