# I don't know how I did it.

**URL:** <https://forums.speedlife.net/t/i-dont-know-how-i-did-it/144406>\
**Category:** Canada Nissan Automotive\
**Created:** [September 24, 2006, 11:50pm UTC](https://forums.speedlife.net/t/i-dont-know-how-i-did-it/144406 "2006-09-24T23:50:20Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![CA18DET-180SX](https://avatars.discourse-cdn.com/v4/letter/c/e0b2c6/32.png) [@CA18DET-180SX](https://forums.speedlife.net/u/CA18DET-180SX)\
**Post date:** [September 24, 2006, 11:50pm UTC](https://forums.speedlife.net/t/i-dont-know-how-i-did-it/144406/1 "2006-09-24T23:50:20Z")

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Yeah so on my drive home from Edmonton to Wainwright I somehow got 155kms to 14L of fuel. I worked it out to right around 30mpg. Gotta love the CA!

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**Author:** ![jdms13rhd](https://avatars.discourse-cdn.com/v4/letter/j/f05b48/32.png) [@jdms13rhd](https://forums.speedlife.net/u/jdms13rhd)\
**Post date:** [September 25, 2006, 12:56am UTC](https://forums.speedlife.net/t/i-dont-know-how-i-did-it/144406/2 "2006-09-25T00:56:53Z")

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every car I own I throw in one of those cheap autometer air/fuel gauges. Aslong as the gauge is flipping out back and fourth your o2 sensor is in closed loop and it leans out your engine quite a bit hence much better gas millage. Just keep the car out of boost pretty much and it wont be bad. I was getting the same millage driving a RB25 4 door Skyline to Vegas and back. It was great.

Even when I tune my eprom for my RB30, once im in closed loop I run it much more lean and a nice even map. I will let you guys know what millage I get with the 3L.