Quote:
Originally Posted by Vegitto-kun
what is running lean? I probably know it in other terms but does it mean that the engine isn't pumping enough fuel and air in the cilinders?
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Ideal Air/Fuel ratios for a N/A car are in the 12.5 to 12.8:1 range. Too lean would be in the mid 13:1 range.
Turbo cars like to run richer in the mid 11's as more fuel is used to cool the combustion and keep detonation under boost controlled.