For the Lazy what is the PEB Throttle Cut Defender? Thank you.
03-19-2004, 03:37 AM
#24
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What I haven't seen is the plan for adding more fuel
Once you stop telling the computer you are increasing the airflow, you need some way to add more fuel in proportion to the airflow or you will quickly lean out and blow up.
So people uses a rising rate FPR so the computer keeps the injector duty the same but the fuel pressure keeps going up. Others use piggypack computers.
All of those solutions lose the inherent beauty of the fact that one chip can control boost, fuel, etc in perfect harmony. Then again, that is why all of our cars pretty much have one of three output power levels. So, I'm all for doing something creative, just don't blow your car up (or lead people who don't know better to blow theirs up).
So people uses a rising rate FPR so the computer keeps the injector duty the same but the fuel pressure keeps going up. Others use piggypack computers.
All of those solutions lose the inherent beauty of the fact that one chip can control boost, fuel, etc in perfect harmony. Then again, that is why all of our cars pretty much have one of three output power levels. So, I'm all for doing something creative, just don't blow your car up (or lead people who don't know better to blow theirs up).
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03-19-2004, 07:21 AM
#29
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I am assuming they are clamping the AFM signal with a zener
or maybe an active circuit. If I am wrong about that, then never mind.
If they are clamping the AFM signal then:
The fuel would be good up to the airflow that generates the voltage of the clamp. Beyond that point, the airflow continues to increase but the AFM signal does not. How will the ECU know that there is more air so it knows to provide more fuel?
If they are clamping the AFM signal then:
The fuel would be good up to the airflow that generates the voltage of the clamp. Beyond that point, the airflow continues to increase but the AFM signal does not. How will the ECU know that there is more air so it knows to provide more fuel?
