Hi guys Can some one help me please. Sbf 427 with a 91mm turbo , the car spits and cuts as soon as I hit the gas paddle I’ve got a video to explain what I’m talking about
Ps . The car runs great 7.8 with 18 or 19 psi
^^^^X2^^^ Sounds like it needs enrichment at tip in. Basically what a double pumper carb does when you snap the throttle blades open, the shot of fuel gets you over the lean stumble. The EFI obviously doesn't care about loss of signal to the boosters but there is still a lot of air all of a sudden that must be dealt with. Two areas to check would be ROC tps fuel table and accel enrichment table. Some systems use different names but the functionality is basically the same. Hope this helps.