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2010 Mazdaspeed3. 88k miles. Getting intermittent P0171 code, lean bank. Have replaced plugs (Ngk perfectly gapped), coil packs, cam and crank posit sensors, MAF sensor, and even the upstream O2/AF mix sensor. Still getting code. Occasionally. Totally random. 10 miles. 30 miles driving...

I'm looking all over for non-oem coil packs for my gen 2 MS3. Can only find for regular mazda 3. Nopal? Accel? Weaponx? Do these all fit gen2, as well? Car has slight miss under different loads, speeds, throttle, acceleration. Sometimes very apparent to any car guy in car, sometimes subtle...