builtmotor

For the longest now ive been having a cylinder 4 misfire that will come and go out of random. Ive gone through and replaced a ton of hardware( spark plugs/coil packs/wiring harness/fuel injectors and seals/ fuel rail and injector harness/) only time I've noticed a difference of the problem...

Hey everyone, Im fairly new to the MZR disi community, purchased my 07 ms6 almost a year ago after wanting something more reliable than my rx7 and a month into owning it she went zzb on me and started playing knock knock jokes. So now she's getting built. Would love for any tips and feedback...