Contour Enthusiasts Group Archives Forums Modifications Forced Induction fuel pressure, again...

Those numbers sound fairly normal to me. Irregardless of the fuel pressure. The air fuel ratio should be cycling back and forth.
The 14-15:1 on normal cruise is right on, and even 17:1 when you are under part throttle is normal too, it is to save fuel. Remember, the air fuel being higher like that promotes a cleaner more complete burn and as long as the intake charge going into the cylinders is small that will not be a problem.

I'm beginning to think you are barking up the wrong tree. I did the exact same thing years ago when I had misfires, I even originally bought my eManange to control air fuel because I was sure it was an air/fuel misfire.

It turned out to be a bad set of plug wires. You've already spent this much money, just go out and buy a new set of plug wires. Check your plug gaps and either tighten them by around 5thousandths or just get some brand new ones and tighten the gap to the low side of stock plug gap.



Why don't you describe the problems you are having completely first, you original post showed you chasing the fuel pressure but not why you were looking into it.