986 S engine with 996 flash?

[986bsdriver]

Pretty sure it’s just maf diameter that’s important. Make sure whatever flash you use matches the size of the maf you will be running

TRK flashed my 986 with a row tune after several attempts at trying a 996. Just be glad you don’t have an oddball year where they started updating half the wiring. I’m stuck using a 986 maf, 987 air box and 997 throttle body. Minor bottle neck but I’m happy not having to deal with the SAI and secondary o2 codes. The amount of HP you may lose running a slightly smaller maf is negligible in real world driving conditions anyways.