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View Full Version : SR20DET Fuel Delivery Issue? Need HELP


rps13sh
12-30-2009, 12:35 PM
OKAY, i have a S13 SR Blacktop that's having some issues which i cant seem to figure out right now.
My setup:
S13 SR with S15 turbo,
stock SR injectors (purple)
R32 Skyline Fuel Pump,
stock intake manifold,
stock fuel rails,
stock fpr,
Z32 fuel filter,
AEM EMS tuned to 300whp 300tq @14psi
AEM Methanol Injection Kit
all the bolt ons, dp, testpipe, 3" catback, etc.

Now the problem is, the cars been running perfectly fine for a while now but very recently my car would start up fine but sound like a subaru and i have very little power. Turbo spools, bov goes off, i get BOOST but engine feels like its running on 3 or less cylinders so i checked the coil packs, i tried replacing the injectors, changed the injector rings, what else... changed the spark plugs. Still the same, BUTTT when i drive it around and get on the highway for a bit then its perfectly fine. runs fine, boosts fine. and i can get back on local streets and the car seems fine. Obviously somethings going bad but i dont know how to pin point it so i thought maybe i can get some feedback from you guys that will help me in my process.

I have a NISMO FPR so i ordered a FPR gauge today so i can check my fuel pressure. Also ordered some 555cc injectors because my tuner said i needed bigger injectors to get more power, but i was fine with my 300whp so i didnt bother to change them earlier on. any ideas on what i can do on the meantime please feel free to post your 2cents.

THANKS IN ADVANCE GUYS.