Originally Posted by
Ryan
can the ecu not control the flow rate of the pump on the autronic and vipec?
i.e on several motec systems i have worked on they run several failsafe strategies, one being if the ecu power drops below a certain power the ecu triggers a failsafe strategy which puts the map in limp mode and slow the rate of the fuel pump also to save failure.
How I have mapped my nova, it will lengthen the injector duration to allow for a drop in voltage at the ecu.
I cant imagine why you would want to slow the pump though, then you would get a drop if pressure too, and surely that is the last thing you want?
Unless you are monitoring the fuel pressure you are pretty much fucked once the pump stops working well enough to maintain pressure though, you would never be able to guess at it well enough, so the trick is just to get the ecu to stop allowing boost once the voltage drops enough that you believe fuel pressure has become a problem.