dsp5 defueling

[SGFastMax]

i installed a dsp5 switch on an 03 lb7. all the tunes works fine but no matter what position the switch is in everytime the truck upshifts it defuels too long, probably for 2 or 3 seconds. it doesnt do this downshifting. it never did this when the tunes where downloaded right from the box. i thought maybe it would be a learning problem with the tcm but hes put 300 miles on it and no change. i used the stock tune as the base tune. anyone know whats going on?

[GMC-2002-Dmax]

Copying commercial tunes is theft, the author of those tunes sold them in a downloader to be used on one vehicle at a time, not for them to be copied.

I doubt anyone will help you figure out what is not working with stolen tunes.

JMHO.

:bad: