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Stumble/miss at part throttle/cruise

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Old 03-18-2013, 09:38 PM
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Default Stumble/miss at part throttle/cruise

LS3 top end with GMPP controller...

Very noticeable miss at party throttle but no misfire codes. Where should I start?
Old 03-19-2013, 07:57 AM
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In the tune diagnostic forum?? Might get more attention there.
Old 03-21-2013, 07:25 PM
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when i put my car together i some how managed to get the O2 sensor plugs on the wrong sides (bank 1 on bank 2 O2 sensor and vice versa) and had the same symptoms that you are having. stumble/miss at low rpm and cruising but at wide open throttle it didnt miss a beat. never threw any codes either. swapped O2 sensor wires to the proper sides and its been working flawless since. hope this helps.
Old 03-21-2013, 09:11 PM
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What MAF are you using? If it is the cartridge style, that could be where to start.

Jon
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