nuclearr
15+ Year Contributor
- 1,410
- 13
- Jun 22, 2004
-
Slidell,
Louisiana
I have been fighting fuel cut and miss fires at high rpm. I have replaced wires pulgs, fuel filter. Fuel pump o-ring.
I have a walbro 255 hp in the tank. I moved the aeromotive afpr's gauge on to the wiper cowl to see it while driving. I am losing pressure at about 10 PSI of boost. I also can not build more than 60 psi of fuel pressure.
I also know from my logs that I am getting flat top on the MAS hz at my fuel cut/miss fire. Around 2300Hz
I am running a what I believe is a turbonetics 50 trim (uncertain it could be larger). I am running a SBR internally gated turbine housing. Waste gate can not go lower than 25 psi.
Done boost leaks holding to 25 psi
I have been fighting this since I got the car running two years ago on the 16g it was not soo bad, but on the 50 trim its at much lower rpms. Also the car did run better when I first put the 50 trim on.
I just do not know were to start. I think I have multiple issues. I am leaning towards a new fuel pump and time for SD.
Only major change I made was took off my COP and put the stock coil back on to help with a random miss fire CEL p0300 helped some but not allot.
I have a walbro 255 hp in the tank. I moved the aeromotive afpr's gauge on to the wiper cowl to see it while driving. I am losing pressure at about 10 PSI of boost. I also can not build more than 60 psi of fuel pressure.
I also know from my logs that I am getting flat top on the MAS hz at my fuel cut/miss fire. Around 2300Hz
I am running a what I believe is a turbonetics 50 trim (uncertain it could be larger). I am running a SBR internally gated turbine housing. Waste gate can not go lower than 25 psi.
Done boost leaks holding to 25 psi
I have been fighting this since I got the car running two years ago on the 16g it was not soo bad, but on the 50 trim its at much lower rpms. Also the car did run better when I first put the 50 trim on.
I just do not know were to start. I think I have multiple issues. I am leaning towards a new fuel pump and time for SD.
Only major change I made was took off my COP and put the stock coil back on to help with a random miss fire CEL p0300 helped some but not allot.