I just installed a aem fuel rail with a holly 255 forced induction pump, but my a/f keeps going to lean when im @WOT. It starts off in the rich then creeps so far into lean it goes off??? NEED HELP PLEASE.

 

Just because you have the capacity to supply a larger amount of fuel, does not mean that you ARE supplying a larger amount of fuel.

 

then what does this mean because you just totally lost me

 

it means...getta better fuel setup...


Modified by MiraiZ at 4:35 PM 7/14/2003

 

injectors ? some type of EMS ? FPR ?

 

bigger injectors will definatly help too

 

Get some kind of fuel management system with larger injectors.

 

i have the greddy fcu with rc 440's with the holly pump and aem rail? what else do i need?

 

what your setup? motor, boost, etc? is the pump intank or inline? i'd say at least get a fuel pressure gauge so you can monitor it. how are u monitoring a/f? autometer led gauge?

 

Internal Engine Work Performed


Double shot pinged rods
JE/SRP 9.1:1 +.20 Oversized Pitons and Rings
STR Block Guard
Square decked block
Shaved head
Crower Double Spring Valve springs
Crower Titanium Retainers
Resurfaced Valves/seats
Holly 255 Forced fuel pump
AEM fuel Rail

Engine Equipment And or gauges

B&M Fuel Pressure Regulator
B&M Fuel Pressure Gauge
AEM Cam Gears
Nology PC-10 Unit
Nology Plug Wires
Denso Iridium Plugs
Greddy T.V.V.C. Manual Boost controller
Greddy Type-S blow off valve
Greddy 18G Turbo Kit (Incuded Fuel Cont. Unit and RC 520cc injectors)
Greddy Small front mount intercooler
HKS Turbo Timer
Autometer Air/Fuel Gauge
Autometer Boost Pressure Gauge
Autometer Oil Pressure Gauge
Straight thru Cat.
Custom 2.5” exhaust brought to dual outs
APR Strut Brace

Engine Settings

Fuel Pressure 52lbs/60@WOT
Intake Valves 2 degrees advanced
Exhaust Valves 2.5 degrees advanced
Blowoff valve Set @ 14lbs.
Boost pressure Reg. 7lbs. Street/14lbs. Strip
Ign. Timing Retarded 2 degrees
Spark plugs 2 degrees colder
Spark plug Gap .028 Gap