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911st 911st is offline
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Join Date: Jan 2004
Location: Sacramento
Posts: 7,269
Found something else. There seems to be a "Diagnostics Plug Socket", probably in the motor compartment. Pin 19 is the" Impulse Ratio Oxygen Regulator". This is probably where you can test the frequency valve "duty cycle" using a dwell meter. Pin 7 looks to be the ground.

This could also be a way to set ones CO if one wanted. When warm the duty cycle should be 50% for CO to be at spec. Set is at less than 50% and there will be more fuel on WOT and even more when triggering the 75% acceleration function.

For an RPM signal, it looks to come from the Control Unit 69 in the motor compartment as a black/vilot. Is pin #1 at the motor harness. Then is pin 4 under the seat at the Control Unit Turbocharger.

Hope this is not to much and is what you need. I am confident this is a missing opportunity for more fuel on C2 turbos.
Old 03-16-2009, 03:34 PM
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