boomz55
New Member
I am just starting to tune ( actually run tunes from the library) i put this 425RWHP in my truck and love it. mileage incerased alot and it hauls!! from reading through the old posts i saw that Jeff ran this tune with his stock tranny. i am running a stock tranny now. i havent had any problems at all yet but put the 90+HP tune in now in fear for ally's life (havent run it much with the 90+ yet). did you ever have problems with your stock tranny? should i stay away from the 425RWHP tune and if so do you guys know of anything between the two that will have more power but be ok to run?