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Re: 1991 Accord fuel mapping with/without EGR (before/after cleaning)
Posted to Technical Theory Forum on 3/1/2012 2 Replies

Hi again Adrian,

Plugged EGR ports won't affect manifold vacuum except at cruise. The PCM will never see a problem, as the EGR is flowing, and a MAP return voltage changes, indicating to the PCM that the system is working, and no EGR codes set. When the EGR... Login to read more.

2 Replies Received (View Replies)