2010 Procharged Challenger WOT shift issues

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08-06-2019
Curturbo

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2010 Procharged Challenger WOT shift issues

I am not a dodge tuner, yet, and I am trying to help out a friend. He has been told that the transmission needs replacement. Just want to make sure before sending him that way. I have attached 2 logs, one with the trans in D and the other is slapshifting. It seems that it is either in a delayed shift mode at times. It has no trans related codes, but has had a rear gear change to a 3.92. It also doesn't going into WOT shifting, assuming because the pedal is not at 98% like the tune requires. I may be completely wrong. Just looking for any advice. This is not my tune. I am only trying to help him out. It's been like this since the day it was tuned though. Thanks.
08-07-2019
Curturbo

Bump... thanks
09-11-2019
Mag0842

Quote:

Originally Posted by Curturbo

I am not a dodge tuner, yet, and I am trying to help out a friend. He has been told that the transmission needs replacement. Just want to make sure before sending him that way. I have attached 2 logs, one with the trans in D and the other is slapshifting. It seems that it is either in a delayed shift mode at times. It has no trans related codes, but has had a rear gear change to a 3.92. It also doesn't going into WOT shifting, assuming because the pedal is not at 98% like the tune requires. I may be completely wrong. Just looking for any advice. This is not my tune. I am only trying to help him out. It's been like this since the day it was tuned though. Thanks.

So that I understand what you're saying is......The trans is blowing past the commanded shift point?
10-16-2019
chriscward71

do you have any trans or ABS codes coming up? also do you have the factory trans tune file. i do not have a 2010 R/T Nag1 i do however have a 2012 SRT Nag1 file and there are A LOT of differences between the two that could be causing the hang shift issue. Also under shift scheduling scaling the WOT output speed signal to compensate for the gear change works for some, and causes problems for others that i have seen but best to start with a fresh stock tune file and go from there. let me know if you have the stock file or not and ill try to track one down.
10-17-2019
kronalogi.wireless@gmail.

Did you change the gear ratio in the Tune? Still showing stock ratio!
10-25-2019
allpargarage

Quote:

Originally Posted by kronalogi.wireless@gmail.

Did you change the gear ratio in the Tune? Still showing stock ratio!

Exactly. The TCM uses the wheel speed sensors as the transmission output speed. If the gear ratio is not updated, then the gear change will not play nice with the TCM. Change gear ratio in Scanner.