No idle after running fine

[baronsmith98]

Papa Regal VE Tune.hpt E38, LY6 6.0, BTR NA stage 3 cam, Headers, LS3 intake, LS3 injectors, Th350. I have this setup in a Buick Regal drag car and have had it running for a few months now. I cant really drive it on the street so I have just been putting around the field at my house doing some light MAF tuning and about to start VVE tuning and it has ran fine until today. I went to turn around and it died on me. Try to start it back up and it turns over but does not crank. Try it again and give it a little gas and it cranks but you have to keep it above about 1,200 rpm or it dies on you. It has always fired right up and idles around 850ish. I have changed throttle bodies, TPS reset, New accelerator pedal, tried unplugging maf. Nothing works!! I can crank it up while giving it gas and hold it at whatever RPM I want but it will die if I lift on the throttle. It may be the tune but why would it run fine for so long and now will not idle??

[baronsmith98]

last2.hpl Scan of it running while I am giving it throttle then it dying