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Old 03-01-2024, 01:20 AM
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C63 AMG SEDAN 2013 (PP)
Fuel trims
Can somebody please tell me if my fuel trims are correct or pulling more…. Facing rough idle issues

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Old 03-01-2024, 08:31 AM
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12 C63BS Magno Alanite Grey, 22 X3M Brooklyn Grey, 08 BMW E93, 22 Ducati Desert Sled, John Deere 3R
Any mods, row air boxes different filters?
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Old 03-01-2024, 09:31 AM
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C63 AMG SEDAN 2013 (PP)
Originally Posted by roadkillrob
Any mods, row air boxes different filters?
Hi,
installed a supercharger and been facing rough idle issue….
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Old 03-01-2024, 04:33 PM
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W211 E63 AMG
trims are moving a lot more than they should but the amount they're moving isn't really out of spec.
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Old 03-01-2024, 05:38 PM
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trims moving as much as you're seeing, you have a mechanical concern (dirty MAF sensors, failing map sensors, failing oxygen sensors, etc) or your supercharger tune is not mapped correctly and its causing the ECU to overcompensate in both directions as it does not know how to control the idle as the mapping done is not correct.
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Old 03-02-2024, 11:20 AM
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C63 AMG SEDAN 2013 (PP)
Originally Posted by eightysixtuned
trims moving as much as you're seeing, you have a mechanical concern (dirty MAF sensors, failing map sensors, failing oxygen sensors, etc) or your supercharger tune is not mapped correctly and its causing the ECU to overcompensate in both directions as it does not know how to control the idle as the mapping done is not correct.
What do you mean by mechanical concern sir? Yes will be cleaning the MAF sensors and will O2 sensors…..Yes I have raised this issue with tuner also…
thanks for reply.
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