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I recently moved my car from sea level out here to college at 7,000 feet. I thought that everything would be fine, and I wouldn't have to make any adjustments because of the MAF and ECU, but was told today that adjusting my timing by 12 degrees from TDC would be good at this altitude because it would allow the fuel more time to burn before the downstroke. I know the MAF and ECU make the necessary adjustments for fuel/air mixture, but does it adjust the timing as well?

I also learned that type of adjustment is necessary when using high octane fuel like 100+ for the same reason . I'm not using that kind of fuel, but I had never heard of doing that before.
 

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i wouldnt be changing timing just because of your altitude. i dont see why u would to that
 
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