Too much fuel.

[white92talontsi]

Running a 3.5" gm maf and maft 2.01.
650cc injectors.
Not sure about the pump but I can hear it outside the car.
With the maft set at aux of 1 and a base of 7 for 650's.
Setup like this I have to run the mid and wot knobs full lean. No more I can take out and the car is still running rich. Wondering if I should change to the table for 700's. Like I said fuel pump is unknown. It could be a 255 and overrunning the fpr.

Any suggestions?


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[doubleclutch99]

what brand injectors are they? do you have the dip switches set right? gm 3.5inch is set different than gm 3 in. and if you can check the fuel pres. just a couple of thoughts

 

[white92talontsi]

what brand injectors are they? do you have the dip switches set right? gm 3.5inch is set different than gm 3 in. and if you can check the fuel pres. just a couple of thoughts

FIC 650's. Have dipswitch 1 on the rest off for 3.5"
I need to check fuel pressure but can't buy a fpr til a few weeks.
Poor guy here. Lol.



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[doubleclutch99]

i believe dip switch no 2 is suppose to be on and the rest are suppose to be off. but check to verify. heres the link DSM MAFT Support - Full Throttle Speed Tech Support

 

[white92talontsi]

I think I finally figured this problem out. It seems that the o2 is not heating up like it should.
In order to get the Air fuel in spec I have to make a hard pull to heat the o2 up and then the A/F ratio will then start to level off like it should.

Plan to check wiring to the heater and then check the o2.