Ok so i just tuned an 05 GTP but he is having an issue when he lets off the gas. It will down shift from 4th down to 2nd quickly skipping over 3rd. has anyone seen this issue before? In the tune the only trans settings that were changed were the 2-3 and 3-4 WOT rpm and mph. no other trans setting was adjusted.

 

Does the 05 have the performance shift?

 

I did t see a perf shift button and no perf tables are mapped in dhp

 

Issue solved. I used a new bin file and removed the radio fuse while performing the write. ( full write as the 05 gtp won't accept partial's). Shifts correctly now