Stalling problem

[GeneralGrant]

Im having a problem with my car stalling on the way down (in the Rs) after a load or a pretty good rev in neutral. Its a turbocharged 95, I used to have a problem with the car falling flat on its face when reved (on the way up) but i attributed that to a bad maf sensor. at the time i was runing 19# and stock maf with a fmu. So i put in a 42#maf and injectors. (stock ecu still) now Im having this new problem but the old one is gone. Any suggestions? Im thinkin maybe a vacume leak or maybe i just need to get it tuned really bad. I dont know.

 

[95strokerPSU]

I don't know that much about turbo'd cars, but I wouldn't even be driving the car unless it was tuned. I think that's your first step.