You won't need to run a afc-hack if you have a FMU. Just get it tuned...its alot better that way. I was running a v-afc, 440's, Vortech FMU, and a Walbro 255 fuel pump...and I had it about -45 on the settings. It was like night and day after I got it tuned though. I would HIGHLY suggest getting in tuned asap.

HIH