hey, just purchased a 87T had the codes 13 and 34 fixed both, changed out plugs had bosch plat plugs that were fouled and blue in color, found that the coil pac was on backwards turned around, has a adj fuel reg and the pressure was 80 on stock inj lowered to 38, also replaced the kenny bell chip with a GM stock chip, car is showing no codes but when the car is not under a load it idles fine but once it is under a load it a acts like it has a miss and runs like crap, car is not throwing any codes and everything is in spec. was just woundering if it could be the module, I plan on doing a compression test and a leak down test any help would be appreciated. thanks Jr.