I'm using a U7198 with latest update (9r17). With 87 octane tune installed truck has no power say 50% less than stock. With Diablo tune installed part throttle say to 50% is shifts fine but under wot it does not rev pass 3500rpm and refuses to shift without backing off the throttle 25% or so. Once ...

I have an 2005 and have the same problem. Any help? Mode 1 causes the same problems as above. Mode 2 does nothing at all. What do I have to do to make my auto upshift manual? I have all the lastest updates do to my Diablo. Do I need to do something to the car?