Update.
I?ve had the MPVI2+ Pro for over a month now. Many of the transmission controls have zero effect once flashed on the JTEC+ it seems. I do have a heavier spring in my transmission pump to allow for higher commanded line pressure. It could be placebo. But. I raised WOT shift pressure to 125psi and gave 20% higher throughout the map. It?s barked the tires into 2nd a few times running 32? BFG?s. So, these Parameters may be functioning.
Also, TC control seems responses as well. I have the TC relock much sooner in most gears after an unlock event.
The greatest irritation for me is the shift schedule. It?s clearly not modifying any of these parameters in beta or release in the TCM. Since my engine doesn?t lean over, power wise till over 6100RPM. I have to manually shift it or it will shift at the factory 5300.
Timing, idle, fuel and modifiers work like a charm. I?ve tuned out 98% of common 2002-2004 drivability annoyances. I?m going to swap to an HO ECM since there is no way to enable knock sensors on a different ECM OS by the look of it and my 2006 engine still has them attached. Just need to pin them into the ECM Connector.
I hope HP Tuners R&D teams don?t call the JTEC+ ?done? and not attempt to add more adjustability. 👍
Here?s a clip after some initial light tuning.
https://youtu.be/xX9eKrmDocU