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aux fueling

  1. Parts Wanted
    Any 4 port fuel set up will suffice. Just need it in perfect working condition and a fair price.
  2. Focus ST Performance
    Can someone help me build a DIY aux fuel set up. I prefer this, than buying a full kit cause they’re really pricey and i get the parts of discount anyway. I just need help with what parts to buy and assembly
  3. Focus ST Performance
    I think I just warped my head during street tuning with COBB AP V3. Engine has aux fueling, forged internals and g25 550 with external wastegate (downpipe, 3 inch exhaust and all other good things). I think it happened while hitting the rev limit (WOT). Coolant is leaking from head gasket but...