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I almost finished the single turbo upgrade (SP57 kit with 720cc fuel system) on a friends car, BUT I'm having problems with the VPC (well I think it's the VPC). The main computer keeps on throwing engine code 31 (Air flow meter error). So I assume the VPC is not doing it's job correctly. Now i've wired it up like the article 'how to hard wire the VPC'. Only four wires and a resistor, easy we all say. Well, I've even asked a friend if he could check it, no wiring problems. So my main question: How do you 'measure' or something if the VPC is actually doing what it should do? I see all kinds of blinking leds on the front. Anyone knows what this is? Anyone know how to 'debug' this situation?
thnx
thnx