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  1. M

    Help diagnosing negative fuel trims/ P2178 / P2188 Rich off/at idle codes

    I have an 08 speed3 with corksport hpfp internals, short ram intake/tip, and just a cobb OTS stage 1+ tune. I just fixed a low fuel pressure issue by cleaning the spill valve on the HPFP. A few weeks later I now have codes P2178 (fuel system too rich at off idle), and P2188 (Fuel system too rich...
  2. M

    Fuel Pressure Issue

    I have a 2008 speed3 with around 94k miles. At around 65k miles, corksport short ram intake/TIP, and HPFP internals were installed. Have just run the Cobb OTS Stage 1+ tune since then for these last 3 years on these mods. Recently started getting misfires on startup, then slowly the car started...
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