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the fuel cut is caused by a couple of things all happening at once:
throttle opened to a wide angle and the air-flow meter reaching full-open.
You don't get the cut at low-boost / part throttle because the AFM isn't saturated (maxed out on flow).
at that point, the ecu has nothing to determine how much air is entering the engine and is also maxing out the duty cycle of the injectors so it cuts the injectors to lower the rpms and boost thus causing the afm to return to normal operation.
One way to 'hack' around it is to tighten the spring in the afm, which causes the ECU to think there is less air getting into the engine thus shortening injector duration, and then installing higher flow injectors to add the extra fuel the ECU thinks it's cutting back on. The down side is that lower rpm operation will likely suffer from a rich mixture. Also, improperly chosen injectors or misadjusted afm can cause the ECU to not be able to adjust properly to the O2 sensor readings.
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Quote:
Originally Posted by Junkers88
I went and looked at that Ford.... I can't tell if the vehicle was just abused or if domestic builders don't see the point in building something that will last and look good.
I'm going outside to hug my 4runner.
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Quote:
Originally Posted by DeathCougar
Abe so far has been spot on, 100% correct. As usual
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Insomnia: it's a way of life.
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