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sahein

Code E041

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If the engine is not in closed loop then it will be ignoring the O2.

 

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With larger injectors, the mixture will be a little fat when in open loop, like cold or at full throttle. The expected injector flow rate is adjustable in the chip if desired. Regarding the knock counts, I had a similar issue where it would not register any knock when testing. I replaced the Memcal with one from Jim and the problem went away. I would at least try disconnecting and reinstalling the harness connections at the ECM and the Memcal itself.

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