Ok if I switch over to a aftermarket engine management ssytem, what do I do about the transmission.? Is there a kit to leave it or something along the lines of a dumd mode, shift up at X mph and shift down at X mph.

Ricky

 

You will need a tranny controller, TCI, Hughes, or PCS. Or you can go to a TH400 which does not require a controller.

 

thanks I will check the tci unit out.
Ricky