Lq4 dies when given gas
 

I have a lq4 with ported ls3 heads intake and a comps cam. I had the computer base tuned and it takes a little bit of cranking to start up. One started if I touch the accelerayor it dies until I let off. Any help would be appreciated .

Need some more info. IS it drive by cable or drive by wire. What year is the motor, what car is it and what year pcm are you using? If you can post your tune that would also be a big help.

Its drive by cable. Its out of a 2003 2500HD, its in a 70 Chevelle. PCM is from Jon at PSI Wiring, it was based tuned by a local tuner using build specs. I wouldnt know how to post my tune. I should mention it worked good a couple of weeks ago and the only thing I changed was instead of just sitting the MAF sensor in the intake (which was just a tube) I have cut a hole in the tube and glued in a mount for it. Pressure of regulator is 51 PSI.

maybe I should have posted this in Conversions and hybrids. What is the procedure for moving?