Post update? If so, fuel map can't really be changed or adjusted as it does so on the fly. You could reset it back to defaults and it will re-learn, disconnect positive terminal to ground or negative terminal (use jumper cable if it doesn't quite reach) and try key to start a couple of times and/or flash headlights on/off couple of times. Which fuel do you typically use?
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98 XJ Sport 4.0L / Intake & Exhaust / Taurus Fan / 3" OME Lift / 31x10.5 Silverstone / HID & LEDs
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