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  1. General Maintenance, Troubleshooting & Accidents.
    My 2017 sti is bone stock and my daily driver. Recently at about 65k miles i noticed stuttering and jerking at WOT above 4.5k rpm. I then replaced my spark plugs with oem NGK plugs (my old plugs turned white instead of black) and that didnt help. During the hesitation the check engine light...
  2. General Maintenance, Troubleshooting & Accidents.
  3. General Maintenance, Troubleshooting & Accidents.
    So my son’s 2008 WRX randomly threw a P0301 code (independent, no other codes). I did basic work, plugs with proper gap, a #1 coil pack, and cleaned MaF. The plug condition (all 4) was poor and I thought I had this. The car seems to start normally and idle semi-Ok, seems like there is still a...
  4. Tuning: Electronic Engine Management
    Hey guys first off thanks to anyone who is willing to help me with this issue. My 04 STI has been having a problem with misfiring. I know exactly when the car is misfiring because at around 6000 rpm the car will have the check engine light flicker about twice. My codes are P0301, P0302...
1-4 of 4 Results