Quote Originally Posted by dave w View Post
I use TunerCats not TunerPro for flashing PCM's.

With TunerCats, I start with a 5.7 LS1 Manual Transmission flash and update the engine parameters (fuel tables, spark tables, injector parameters / tables, and MAF tables) to the 5.3 Liter (copy / paste marathon )

Deceleration Fuel Cutoff (DFCO) parameters for a manual transmission are different vs. an automatic transmission, which is the primary reason I start with a manual trans flash.

Perhaps TunerPro has a 5.7 LS1 Manual flash available?

dave w
Hey Dave thanks for taking the time! What are the odds you have a HDW 12580786 DBW 5.3 manual bin lying around? I am not sure if im ready to run the copy paste marathon, still wrapping my head around how all of this works... + my concern is the LS1 XDF is not going to play nice with my 2003 DBW, correct me if im wrong.

Would it not be easier to just change the DFCO parameters vs changing all of your engine parameters?