So I swapped to a LS3 style car on my Chevy SS. The car has an LS3 but the maf was the old school style. The car started and ran before but the MAF was not reading. I found a $12 wiring harness designed to swap the plugs and it worked great but the car won't run. It'll start and I can read the MAF but it chugs for a second and dies. If I hold the gas it says it will rev but as soon as I let out it dies.
The car had an LSA supercharger on it and we just did a ported blower, cam/head swap and a pulley.
I smelled gas and it showed a ton of misfires. I'm guessing I need to completely remap my maf? It is going from a 90mm old school style to a card style on a 4" intake. I have a tune file from a CTS-V, should I start from there? Just copy/paste that maf table. Anything else I should look into changing?