Just sitting idle the car will start to rev up and down by it self till it stalls. it only does it everonce in a while. Also when driving if there is a load on the car it will bogg down and stall. WTF. its a 5speed with bolt ons to include maf and tb. any ideas fellas?

 

was the maf calibrated for the injectorss?? that is to say you put a bigger one on....and first things first..perform a koeo/koer test and see if any codes are present