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Goes lean when accelerating


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Had my MGB 5.0L rover v8 + G4+ extreme black mapped on a rolling road recently. Now the Guy has gone on month long holiday so need some help please.

It drives really nice when cruising but AFR  goes very lean and engine pops back when accelerating. feels like its holding back.

I'm not sure about the Accel wakeup/load correction. The Accel load axis is set to TPS.

Any advice would be greatly appreciated.

Thanks Mark






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