Lean fuel pressure problem. Weird thing is, it only does it once in while. I could drive the hell out of the car say for a few hours... stuck in traffic... You know the drill. Then all of a sudden step on the gas and the air fuel gauge drop off the map and the fuel pressure gauge goes 60.. 50..40..30..and then intake back fires. Weird right? Won't do it all the time! Just once in a while. BL at idle is about 130-135 and always has been for the last 10 years. I'm using the extender chip with 55lbs injecters set at 45psi. I'm using translator with base maf set at 0 no change,maf wot throttle set to 6% rich, spark base 2 degrees advance and spark wot 6 degrees retarded. Any body have thoughts on this problem. It's has to be the pump right? Or fuel pressure regulator. Any of your guys or gals thoughts would be appreciated! Summer is coming to an end fast lol.