Originally Posted by
sturgillbd
My open loop afr table is not stock. I had to enrichen some because I was too lean.. My tune isn't perfect but the last 400 mile round trip I made in my Jeep, I got 19.5 mpg running 60-65 mph on the road and the M38A1 (cj5) is not exactly aerodynamic. I am running the Edelbrock Victor JR 2v Sportsman intake with EQ heads. I have the 1.6875 bore tbi (standard sbc size) and I start going into a vacuum after 4000 rpm. At 6000, my map reading is about 80kpa at WOT. You will have to just play with the values until you get it where you want it. As for a lean pop on cold throttle, the AE settings are easily overshot. I also run 61pph injectors at close to 30 psi. Im a little rich at idle but the pcm compensates decently. You were surprised at the settings difference between the 4L80 bin and mine. Now compare it to some of the CPI bins for the blazers and also look at say a 454 tbi bin like BMHK. Lots of tables that seem fudged just to get GM's desired effect.
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