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Old 03-25-2024, 05:39 PM
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Join Date: Sep 2005
Location: Greeley, Colorado
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Had some time this afternoon to at least plug in the laptop.

The long term learn values for WOT are all very close to what the VE table is commanding. They are ranging from -5% at 5500rpm to +7% around 4000rpm, but most are within half a percent of commanded value. However, as I said, there may not be enough long term learn at these points as I haven't been hotroding the car much recently, mostly just cruising because the cold roads won't hold that much power.

What is happening however is that my cruise to moderate acceleration trims in the 1800-3000 rpm range are all extremely out of whack to the rich side. 35-75kPa load range in that RPM window has learn values over 30% in some places, with the highest values at higher loads. This is where the car is being driven the most and I think this does point to a fueling issue. Considering this is only apparent in this rpm range, I don't believe this would indicate and issue with the oxygen sensor. If that was the case I'd expect learn values to be crazy all over the place.

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1969 Pontiac Firebird