I would like some clarification,
- The car had a JB4 installed and was running ok
-after downpipes install with incorrect O2’s runs bad
-O2 sensors corrected but still runs bad (how was it discovered that the O2 sensors were switched, it’s possible they were damaged and now need replacement)
You might need to do a hard rest of the DME by unplugging the battery overnight
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Daily: G30 M550i, Bluestone, JB4, 1 step colder plugs, 6WB retrofit
Winter Beast: Audi S4 4.2L V8, Supercharger, brakes, suspension & exhaust mods
Wifes': F15 M50d clone, DUDMD tune, WMI, MPBK
Gone: E92 335i N54 468rwtq
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