Pro M Optimizer users, come in...

[IndyBlk5.0]

I got this nice little toy for my car about a week ago. And finally got the courage to hook it up. The problem I am having is I am running lean at idle and cruise, and a tad rich up top.... I am running 24 lb injectors with a 75mm meter calibrated for 24 pound injectors. Now, What settings should I have to correct my lean down low, and keep about the same up top? I'm confused on how it works. Please explain in lamens terms!!

 

[IndyBlk5.0]

Also, for this to work correctly... When tuning on the dyno, was the fuel pressure ever messed with? Or only the settings on the Optimizer? If fuel pressure is changed I will have to take it to a facity with a dyno to dyno tune it.

 

[Grn92LX]

To set the idle a/f with the optomizer hook up a volt meter and look for .6-.7 volts or until the car idles smooth.

As for setting the WOT dial, start at 1 and then lean it out a touch. Or start a little less than 1.

 

[IndyBlk5.0]

Do you recommend I should wait until I get it on the dyno agian? I really don't want to mess up my a/f ratio even worse.

 

[Grn92LX]

That or the track would be the only true way to tell. When I was using it with a 24# maf and 30lb injectors I gained like 4mph just by turning the dial to more rich. Putting it on 1 should keep your a/f as is. I recommend the track or dyno.

 

[IndyBlk5.0]

So how would I get my lean at idle situation taken care of? It pops out the exhaust on decel.

 

[Grn92LX]

That doesnt mean its lean.

Put a volt meter on it like I said. The optomizer should have port on it for the meter to hook up to unless you have the old one. If not, probe pins c&d on the maf harness. Look for .6-.7 volts at idle.