Installed the 87 tune last week. Truck is an '04 2500HD 8.1L/Allison 4x4 ecsb. Quite the change and was very pleased with results. However, curiosity got the better of me and I decided to give the 93 tune a whirl. Tank was empty so I gave it a drink of 10 gallons of 93 octane. Then back home to ...

Most of the TM is removed in the base tune already.
It should not be in your way.

Thanks

Thanks Mike, I understand the TM is adjusted partly out of the way in the tunes. However, my questions IS.............. why do the TM tweaking options NOT show up in the U7193 in my application? Far as the ...

Hello all
Scored a U7193 off E-Bay that had an unknown history. Well, I did pretty good for $44.70 shipped and it was never used! Anywho, played with it over the weekend making sure it all worked right and it does. Truck is an '04 2500HD Silverado, 4x4, 3.73's, ECSB, and everything is stock engine ...