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ratio

  1. 2010-2013 Mazda 3 & Skyactiv Discussion
    I was hoping some one can help me out with a few issues I'm having. To start things off my 3 was giving me rough start issues and I had no code thrown. My air to fuel ratio then was 8:1. Took my car to a mechanic and they replaced my spark plugs, changed oil, air filter, got rid of carbon...
  2. 2014-2018 Mazda 3 Skyactiv Wheels and Tires
    So I have been thinking about this and haven't seen much talked about it in this forum. I have an OEM 18x7" that weighs 26.8 lbs and stock dunlops that weigh 23 lbs total weight of 49.8 lbs. That gives a wheel/tire weight ratio of approx 1.16. The heavier wheel is closer to the center of...
  3. 2004-2009 Mazda 3 Performance & Mods
    Hi Everyone, I am looking for a solution to change the gear ratio in my 2005 2.3 Mazda 3, particularly for the last gear to make it more of an overdrive. The car was purchased in the US with a stock 5-gear manual transmission but I subsequently changed the transmission to a 6-gear one from 2007...
  4. 2014-2018 Mazda 3 Skyactiv Engine and Performance
    Anyone know what the final drive or differential ratio is on our s3 2016s are? I've determined that the minimum speed in gears on my Miata GT is 5 x the gear #, corresponding to about 1500 rpm. For the 3 sGT, it seems to be between 6 and 7. The Miata's final drive ratio is 4.10. That would...
  5. 2014-2018 Mazda 3 Skyactiv Engine and Performance
    I have a loaner 2.0L with an automatic. My car is a 2.5L with a manual. At 70mph my car is running about 2500rpm. The 2.0L auto is running about 2000 rpm. That's a huge difference, and the engine is smaller/weaker. Very surprising that the 2.5L is geared so low in 6th. Certainly explains...
  6. 2010-2013 Mazda 3 Engine and Performance
    Does compression ratio affect exhaust note? I have seen a few older Mazda 3 with different cat backs that sound kind of ricey, but seems that the newer ones - specifically the Skyactiv - seem to sound deeper and less crackly... is this due to the higher compression ratio of our Skyactiv...
  7. 2010-2013 Mazda 3 Engine and Performance
    Hey all, I love my Mazda 3 (2010) 2.0L but gas is getting more and more pricey and I was doing some research about trying to improve the fuel efficiency, and I was wondering has anyone had any experience with devices that control the air fuel ratio like this...
  8. 2010-2013 Mazda 3 Engine and Performance
    I have a 2.0 5mt and was wondering if anyone knew the final drive ratio. I tried google ing and didnt find anything...
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