Thread: Yes, I do feel like a lightning rod - MY OWN TUNE.
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Old Feb 17, 2009 | 05:26 PM
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waldig
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From: VA
Talking Re: Yes, I do feel like a lightning rod - MY OWN TUNE.
Pretty much correct.

From Idle to 17 PSIG boost I am rich, I need to pull back on the fuel rail pressure so that I could lean there also

Now I will be lean everywhere. THe car fuel air ratio I ment.

Now with the controller "man-ing the rudder" the WOT will be sensed with the Zietronics data logger, and if it is lean, a control will increase the pressure signal to the fuel pressure regulator. THe FPR will increase the fuel pressure causing more fuel thru the injector and reducing the lean condition up to the alarm 'setpoint'. I should be able to control the setpoint and have the data logger drive the fuel rail pressure to give me what I want say 12.5.

I know that the s/c boost will just overdo the fuel mixture as I was 17:1 before I added the boost signal to the FPR. After the hose was added, the F/A readings fell to about 10.7 to 1 !!!!!!!!!!!!!!!!!!!!!!!!! That is way way rich, meaning I can go from lean to rich just by adding a CONTROLLED boost signal to the factory fuel pressure regulator (FPR). BTW the book is wrong as there is no return hose from the fuel system rail, everything is done inside and at the fpr under the passenger seat area. Inside that big plastic cover just front of the axle on the passenger side.

As the computer used to say "WORKING" , more soon.

Woody
 
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