I am having a problem that is very annoying. I have stage two cams and JDM tuned with 55 pound injectors and Pro M Meter. My truck is having and idle issue that i just cant understand. It is fine untill it warms up to operating temp and then is kinda erratic. When i come to a COMPLETE stop the RPM's bog down to around 450-500 like is gonna stall then it go back up to 750 or so. Also if i am in park/neutral and free rev the motor to 1500 to 2500 and then let off it does this same thing however it kinda keeps on reving to 1100 for a second and then does the surge thing. Now last night my truck the idle was surging and everything was going kinda crazy like it wanted to stall. My fuel pressure guage was going from 38 psi to 60 back and forth as it was surging. I have sent the chip back to JDM three times and they still have not fixed my problem. I have checked everything. I have all new coil packs, new plugs, other drivability is great, great power(12.0 @115).

Anyone have any ideas.

Zach