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OBD codes for running lean

I'm running out of ideas. I had an ecuTek tune back in august for my HFC's, exhaust, and Stillen intakes and everything was cool (everything was fine before having the

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Old 05-03-2017, 09:14 PM   #1 (permalink)
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Default OBD codes for running lean

I'm running out of ideas. I had an ecuTek tune back in august for my HFC's, exhaust, and Stillen intakes and everything was cool (everything was fine before having the tune as well.)

Back in October, I installed test pipes but did no re-tune so codes for banks 1&2 running lean which I expected.

Now I've swapped out my test pipes for high flows again along with new o2 sensors and it's still throwing those codes which confuses the hell out of me.
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Last edited by DeliriousClam; 05-04-2017 at 05:26 AM. Reason: wrote while on the verge of sleeping
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