DsmDanielson
Proven Member
- 104
- 0
- Jul 13, 2016
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Peoria,
Arizona
So i did dome research and couldnt find much to touch on my particular scenario. Shout out to Michael Hensel for helping me get my car startwd and idling normally! seems i found a friend. In other news, heres the facts. 1g block, 2g head, 1g cas, 560 evo injectors, stock fpr for now, 190lph fuel pump, fmic, and big 16g turbo. Problem goes as follows. The car goes really lean when i get past 10hg of vacuum. Ill cold start it, and it will idle at 800 rpm on 16hg of vacuum till it warms up, then it will go to 20hg of vacuum and 1000 rpm. ( I made the idle high to compensate for my exhaust leak at the flex pipe because at low rpm it will make my car go lean) I verified an issue at my ecu with the alternator as it was outputting a low voltsge (12.2) at idle, so i clipped ecu pin 33 and sure enough, volts at idle went to 14.0. So now my car will stay on, the low voltage on my alternaotr wasnt enough to supply the fuel pump no matter what i did on my safc2. So i stsrt driving my car and i can get my car to 10 hg of vacuum before it starts going waaaaay lean and bucking. Heres whats strange: I already put +20 all the way across to make my car stoich at idle and a little higher for high rpms. this bothers me because the baseline correction for 560 injectors is -18, and i know every car is different but my maf is untouched, no vacuum leaks (strong 20hg vacuum) and a boost leak would make my car rich not lean. So i dont know if my fuel pump is going bye bye, its not crazy loud or anything. if my injectors were clogged it would be lean at idle too. i have 3/4 tank of gas, although its been in there for 3 months, i wouldnt say its bad yet. Could it be my fuel pump relay? Fuel pressure regulator ? Im soooo close to my car running perfect and this is the last issue