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Re: 1987 Ford F-150 4.9 A/T and MODIS
Posted to Technical Discussion Forum on 7/21/2012 6 Replies

These are an exercise in understanding the basics, because that's all they are.

Fuel pulse is determined by basic speed density calculations. Your Map frequency's should be around 155-157 hz KOEO, and at 18" vacuum look for 109hz.

The PIP signal (distribu... Login to read more.

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