No, you can't see it without pulling the TB.
Are you also seeing O2 readings that are different between the banks? Does that cal have an option to turn off individual bank fuel trims?
No, you can't see it without pulling the TB.
Are you also seeing O2 readings that are different between the banks? Does that cal have an option to turn off individual bank fuel trims?
O2 readings are same both banks... I even swapped the new O2 sensors awhile back. I know why your going there as I had the issue with post cat O2 sensor which was also same bank. Replaced it and went away... I thought, well the O2 swing of that post Cat sensor went away but this fuel trim issue came back. Post CAT 02 sensors are removed now for testing. Finally tracked it to EGR On/Off.
Wide Band is only in driver side bank which is bank 1 as well. Runs a steady .98-.99 on gauge and logs and no change when fuel trims go to 3.1%. That's well within boundaries of correction and well within goals of a good tune. Just very strange one bank sees correction only when EGR on?
1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
-= =-
There is a Two Bank Fuel Control flag in TunerCat! Just like everything else so much more usable parameters then EFI Live.
TunerCat is also where I found the EGR enable speed. EFI Live only has one parameter for EGR... Enable/Disable...
1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
-= =-
So with that flag you can run in Batch fuel control, or Bank fuel control?
1978 Camaro Type LT, 383, Dual TBI, '7427, 4L80E
1981 Camaro Z-28 Clone, T-Tops, 350/TH350
1981 Camaro Berlinetta, V-6, 3spd
1974 Chevy/GMC Truck, '90 TBI 350, '7427, TH350, NP203, 6" lift, 35s
From what 1project2many says below it sounds like just trim, not a bank/batch change.
Originally Posted by 1project2many
1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
-= =-
It's too bad we don't have any EGR related TPS and RPM parameters available to us. That way we could use the PCM's EGR circuit as a switching circuit.
Jeff
98 GMC RCSB, 5.0, 4L80e, Moser M60, 4.10 gear, Homemade twin turbo w/Junkyard T3 turbos, 24x CNP, 12200411 PCM.
That's what I meant, it can trim each bank, or both as one?
1978 Camaro Type LT, 383, Dual TBI, '7427, 4L80E
1981 Camaro Z-28 Clone, T-Tops, 350/TH350
1981 Camaro Berlinetta, V-6, 3spd
1974 Chevy/GMC Truck, '90 TBI 350, '7427, TH350, NP203, 6" lift, 35s
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