Quote:
Originally Posted by Old Mechanic
Most efficient is low RPM and low vacuum.
1200-2400 with vacuum of 2 inches is pretty close on most engines for acceleration.
Throttle below 80%.
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Pretty much. I'd trim the top end of the rpm range, to maybe 1200-2000 instead.
Throttle can be anything below where the ecu goes into open loop and enriches the mix. My standard target
is 80% throttle, but always below the 95% open loop cutoff on my car.
In the original context - if you're having to choose between low vacuum (high MAP) and low rpm, you need to slow down. Then you can optimize both at the same time.