Join Date: Dec 2008
Location: Tyler, TX
Thanked 407 Times in 347 Posts
Yes, the PCM on the 7.3L does both Engine and Transmssion stuff, you lie to the PCM, you get crappy engine and transmission functions.
Lots of tuners *can* get to the transmission controls on the 7.3L PSDs, the real question is do they?
If the trans is properly controlled with the PCM, there is little if any reason, to go with aftermarket trans parts like shift kits etc.
I am reluctant to support SCT anymore as they have gone from the most open source of proper information to being very tight lipped. None-the-less, SCT software still offers the best transmission controls you can get, and the best (IMO) tuning because of the propietary knowledge they have over everyone else.
'93 F-250 HD, 7.3L IDI, 5spd - FARM TRUCK
I Support: Trailer brakes an every axle over the towing vehicle's GVW; CDLs for RVers; Safety inspections for ALL vehicles and 6 axle trucks (97K GVW proposal).
Democracy is two wolves and a lamb voting on what to have for lunch. Liberty is a well-armed lamb contesting the vote - Benjamin Franklin
I vote for LIBERTY!