ok so im running a basically stock y8 with arp's, cometic hg, skunk2 i.m, with a evoIII 16g turbo, turbo xs boost controller, with aftermarket 550 injectors with the dm clips wired too. i do have the resistor box wired as well and everything seems to be correct... i have chipped p28 with base map for 8 lbs and the 550s... i also am running the 2 step colder spark plugs but kept the same plug wires... now when i first start up the car it sounds like a big block cammed v8 and is running way rich is what i think.. now if i shut it off and start it a couple times it still idles really low but if i rev it it revs fine on all 4 cylinders.... no cel btw so if i drive down the road and get into gas it will go fine if im on it and about to spool or build up little bit of boost but if i hold the gas at half throttle it just cuts up and isnt steady, i tried an aftermarket fpr and it didnt seem to do **** however i turned the distributor back and it ran better but still probs any tips plz help!

 

Get it tuned. Do not run on a basemap.

 

Agreed