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[Jackpine]

Originally Posted by SinCityFX4

The 1-2v shift is rarley smooth as it should be regardless of throttle level. The serious shudder issues are always under light-moderate throttle and never at WOT. Honestly I am afraid it will cause an issue so I have not been at WOT for the last few days. It did it again where it shuddered REAL hard from 1-2 at light-moderate throttle coming through a rolling stop at a stop sign. My 10 year old looked over and asked "dad, what the heck was that?"

Flashed back to stock and loaded up my VMP tune. Hopefully I can get answer from Bill. Til then the PHP tune will have to sit on the shelf. I dont have 15k on my truck yet and do not want to shorten the tranny lifespan.

AND, if you don't get this behavior at all with Justin's tune, then it DOES point to something that needs adjusting in Bill's tune, doesn't it? I'm sure he can fix it, once he knows it has to be fixed.

- Jack