there are tweeker programs that will piggy back but they never fully reprogram the chip, plus i don't think timing can be altered through those. i know there is software out there for the LT1 and LS! engines. i'll have to check with my buddy and get get back to you about the ford stuff. there was an article that someone did this on a mopar small block but i don't know how it would fare on a big block. plus the larger MAF sensors are pretty expensive.