Fuel problem car running lean help

[jazzyjay]

I thought my problem was with my injectors. So I had them replaced with 950cc injectors, but the problem persist. I have a 255 GPH fuel pump, 6an fuel line from the tank forward Mr gasket fuel filter and Kirban fuel preasure regulator. I currently have my base fuel presure at 44psi with the vacum line off. I have a 60-1 turbo at 15 psi of boost the car is running out of gas. I can adjust the afc to the max and the car still running lean. I swapped the filter for a new fatory unit but still the same results. I will pull the fuel pump tonight to see if the screen is dirt. If anyone have any suggestions please post

 

[ChvyKc]

I thought my problem was with my injectors. So I had them replaced with 950cc injectors, but the problem persist. I have a 255 GPH fuel pump, 6an fuel line from the tank forward Mr gasket fuel filter and Kirban fuel preasure regulator. I currently have my base fuel presure at 44psi with the vacum line off. I have a 60-1 turbo at 15 psi of boost the car is running out of gas. I can adjust the afc to the max and the car still running lean. I swapped the filter for a new fatory unit but still the same results. I will pull the fuel pump tonight to see if the screen is dirt. If anyone have any suggestions please post

There is no way that you should be running lean on that set-up, you should have gobs of fuel for that amount of boost. You have a 255GPH? (as in gallons per hour) If so, that's a huge amount of fuel that you are pushing

Where are you located in SC?

 

[steve]

II currently have my base fuel presure at 44psi with the vacum line off. I have a 60-1 turbo at 15 psi of boost the car is running out of gas. I can adjust the afc to the max and the car still running lean.

With that turbo and those injectors it sounds more like your hitting the IPW cap in the ECU.
Log your IPW, if it rises and then goes flatline as the RPMS go up and your A/F drops, then your hitting it.

Steve

 

[mirkoelek]

airflow? check mas, wiring to it and stuff like that

 

[jazzyjay]

With that turbo and those injectors it sounds more like your hitting the IPW cap in the ECU.
Log your IPW, if it rises and then goes flatline as the RPMS go up and your A/F drops, then your hitting it.

Steve

ok IPW(injector pulse width) These injectors shoud be a over kill, are you say there might be a problem in the ECU I am using a Keydiver chip to compensate. Does it matter what way the chip is turned, does it work both ways. I have notice a dimple at on end of the chip.

 

[steve]

It depends on how old the chip from Keydriver is.
Current ones should have the IPW cap removed but older ones likely don't.

Installing the EPROM backwards will usually blow it and the ECU won't boot. The notch on the chip faces the center of the board and matches the silkscreened outline printed on the ECU.

Steve