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ECMlink Pig rich at idle

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Stapl3

DSM Wiseman
2,266
992
Oct 27, 2004
MI, Michigan
So the car ran great this spring. I pulled the 60-1 off for a new manifold and 35r. Went to start it and it cranked fine, but idled very low and voltage was erratic, wideband was reading very rich. Figured it was a voltage issue so I installed a saturn 160amp alternator and redid some wiring. Now it gets 14+ volts at idle which is great, but the car is still so rich at idle.

6bolt 2.0
BM 1250s
FIC Easytune
mostly e85
Virgin evo 399 maf
New plugs [7's .025]
New NGK wires
Tested coil pack / power transistor
Recalibrated LC1

The attached log is where I'm at. Tons of deadtime and airflow are removed. It will not go in closed loop no matter what I try. I'm now logging my fuel pressure instead of the Omni. Global and base fuel I think are reasonable for what's in the tank. The car ran great this spring on the same tank of fuel at -44.9 global.

I'm seriously out of ideas here. Any thoughts would be greatly appreciated.




-------------------------------

8.30.13 Update:

New 2150s and o2 sensor didn't help, among some other stuff. Switched to SD and the car runs _perfect_. Either something happened with the wiring to the maf or the maf itself. No plans to go back to the MAF after using SD for the last week. I'll update again if I figure out more.
 
Last edited:
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