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Hey guys, I'm thinking of upgrading my halogen headlights and fog lights to LED on my 2008 Mazda 3. Could you guys throw out some good headlight bulb brands? I'm looking for something reliable, but affordable as well. And if you guys have any general advice about doing this upgrade, please...

Hi everyone, Car: 2008 Mazda 3 s Grand Touring I am trying to test the O2 sensors on my car due to a P0171 engine code coming on. I am measuring the internal resistance of the front two O2 sensor that can be accessed from the engine bay of the car. I am getting a reading of 5.9 - 6.0 ohms for...

Hi everyone, I am currently diagnosing an engine code P0171 in my car. I've been using my scangauge II to monitor fuel trim and I've been noticing a very high number for long term fuel trim, as high as 20 or 21. So from my knowledge, the car is adding too much fuel due to an air leak...

Hi everyone! I have a 2008 Mazda 3 Grand Touring and I have been looking into buying a Scangauge 2 for my car. I want to monitor some O2 Sensor data and possibly be able to see the fuel pressure. I have seen on the Scangauage website that very few vehicles output the Fuel Pressure gauge. Can...