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  1. 2004-2009 Mazda3 Discussion
    My wife's 05 3 has about 105k miles on it and we just changed the plugs and did an oil change. Afterwards it's been having a strange RPM bouncing issue. It only happens in 4th gear around 1000rpm. It'll go up to 1500 then back down to 1000 a few times then stop. It will do this anywhere from 2...
  2. 2010-2013 Mazda 3 Engine and Performance
    So I have had my 3 for a grip of time .. About 2 1/2 years and I have all the go fast goodies like CS Sri and cat back along with a few chassis braces from them also a few from god speed and did the cosworth balance shaft del and have reversed the crankshaft position sensor advance cuz it run a...
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