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  1. Focus RS TroubleShooting
    Recently got a Cobb ap to help troubleshoot my p420 code. My exhaust back pressure is 14.3 at idle with a stage 1 93 octane tune on it. Don’t know if this means it’s clogged or not, I know almost all of us have this AP so if anyone could give me some info I’d appreciate it!
  2. Focus RS TroubleShooting
    Have the dreaded p0171 code but common solutions don't seem to fix the problem or make sense in my case. Car has catless downpipe and larger intercooler, both have been on the car for about 18 months. No code. Few months ago had what seemed like a misfire, pulled up to a stop light and car...
  3. Focus RS TroubleShooting
    Hey guys, I have an issue that arose about a month ago. Whenever I steer at low speeds and idle, I get a very loud, what sounds like a rubbing or grinding noise. I haven't been able to pin what it is, closest i got was its on the passenger side of the steering rack, couldn't tell if it was the...
  4. Focus RS TroubleShooting
    My new (to me) 2018 RS's driver side tail light (the LED one that comes on with the headlights or parking lights) wasn't coming on, so I used it as an excuse to order the smoked Spec-D lights I wanted anyway. However, the light doesn't come on in the new set either. The passenger side one has...
  5. Focus RS TroubleShooting
    I have a 2017 Focus RS. It is at the dealer right now with a Rev. Hang/Climb problem. They are telling me that they can’t find a problem and that it’s normal. I have had it Rev. Climb for over a minute. I pull up on the gas peddle and it goes away. The dealer is telling that it’s a fly boy wire...
  6. Focus RS Maintenance
    Hello, I'm new to turbo game. And are having some issues I have been having an issue for little over a month now.. When I start the car up it usually will start with a missfire. It would then Rack up the missfire in a 30 min period but not fast enough to trigger a code. Anywhere from...
  7. Focus RS TroubleShooting
    I got a 2018 mk3 rs I was driving yesterday just getting on the highway not driving crazy just getting up to speed as soon as I set the cruise control the rpm went to like 500 CEL came on and now any drive mode any gear full throttle is the same as 1/4 throttle peak boost is .5 bar or the first...
  8. Focus RS TroubleShooting
    Hey all, wondering if anyone has any info for two codes C422_64 and 1933_64, both showed up today, and I can't find anything online, and neither of these codes are in the proper format from what I've seen. Any help will be appreciated. I'm going to try and take the car in ASAP but if anyone...
  9. Focus RS TroubleShooting
    Hello I drive a 2017 rs. I have simple bolt on mods on it currently (no tune). I took it to shop to get a downpipe put on. We unplugged the battery and it was unplugged for awhile. We went to go start the car after putting it back together and it started flashing all of these codes on the...
  10. Focus RS Discussions
    I recently was hit on my passenger side in my brand new RS. Damage is mainly to passenger doors, rear bumper, side curtain and side seat airbags, and passenger rear wheel, tire, and some mechanical parts behind it. My insurance company deemed a total loss because it is very expensive to fix...
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