can i just reprogram the ecm for LBZ if the ecm is currently a LLY.
I assume you noticed a power difference but what did it do for fuel mileage? I have the same truck and most guys with the LBZ say they're getting better MPG than me. Wondering if your MPG increased with the LBZ program? Thanks.I took mine to my dealer..They reflashed or reprogrammed the ecm for 75 bucks..You need to get a vin. # from an LBZ and the computer does the rest..EFLive can do the same thing and a whole lot more though