I need some help, or maybe just a direction to look in. I installed a Procharger on my 01 SS about 3 months ago and had it tuned. It runs great except within the last couple of weeks the idle has been surging when first started and intermittently when coming to a stop. Any ideas, please help. Fuel pressure is good, I am wondering if I have a leak.

 

surging is overfueling (aka untuned VE table). since you're tuned, i'm gonna guess you used one of the idiot 'pros' who only adjust MAF/IFR to generate a nice dyno graph, take your cash and send you on your marry way, stalling, stumbling, bucking and surging all the way home. get a better tuner.