ive tried everything I can think of every way to lie to the ecu try to make it shift early it always shifts what seems to be 39mph.. no matter the rpm setting, no matter any of the mph 100% or wot settings or shift time, the rear gear/tire combo it always shifts bouncing off rev limit and 39 mph.. I have verified its the ecu not the trans logging the status bit of the shift solenoid for when it shifts. it instantly goes into 2nd when solenoid goes off.. this is driving me crazy