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  1. MazdaSpeed3 Stock Issues
    alright guys. first off just joined the forum cause i have done everything to my knowledge to try and fix this and im going insane. i have a 07 speed 3 with 163k miles. the code that is KILLING ME is the misfire on cyl 1. here is a list of what i personally have to to try and fix it...
  2. MazdaSpeed3 Stock Issues
    2009 Mazda speed 3 with 62000 miles, a few basic bolt ons, and accessport. I’ve been dealing with a misfire on cylinder 1 for a few weeks now. I’ve done a compression test which is 165-170 across the board. Changed plugs and coils. Changed upstream o2 sensors. Put in new Maf. New map as well...
  3. Powertrain 2004-2009 Mazda3
    So I had my injectors replaced at a mazda dealer and the car drove great for a day, until I re fueled and within 30 minutes, the check engine light came on and i got a rough idle and some hesitation when accelerating.. I have it at the dealer now getting checked, but i wanted to reach out to the...
  4. MazdaSpeed
    Hey there, I’m having a problem with my 2008 Speed 3. When I’m travelling along the highway with cruise control on and I go on a slight incline, the engine begins to burble/misfire after that slight load is introduced. It doesn’t seem to do it under full boost conditions. Only just at low rpms...
  5. Modifications
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