Quote:
Originally Posted by b3lha
When you step on the gas, Mass Airflow changes almost instantly but Manifold Pressure lags behind. .
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I disagree, the air flow is a consequence of the vaccum generated, so the vaccum appears first. new sensors can meassure this vaccum faster than the increase of air flow on the MAF.
in the old times, the carburetor had a barb connector for a hose thar lead the the distributor to act on a diafragm to increase the ignition timing advance. This was the "LOAD" factor on the advance. The RPM factor was done with counterweights on the rotor.
We do not have distributors now. It's all on the chip. but I do not feel any increase of the ignition advance due to "load" on my SVX. May be the only way to confirm it, is with a camera and a timing gun, some tape and run the car....