Why would AF ratios have any effect on your IDC?

Your IDC is the amount of time your injectors are open.
The IDC affects the AFR...not the other way around.
When you tune your fuel map, you are essentially adjusting IDC.

Richening up your AF would mean that your IDC should increase at any given point.

 

nj1266:

Running more rich (lower numbers on your fuel map in ECUFlash)
makes your IDC's higher.. (using more fuel)

Running more lean (higher numbers on your fuel map in ECUFlash)
makes the IDC's lower.. (using less fuel)

 

Running higher IDC's make you run richer
Running lower IDC's make you run leaner.

In order to change your IDC's, you adjust the values in your fuel table ( which are not AF values. They are simply "units" )


Telling someone to run richer in order to affect their IDC is like telling someone to drive further to change their gas mileage.

 

Yes, in ECUFlash we change the values in the Fuel Map either up or down.. which in turn changes the IDC and affects AFR's, que no?

Tis what I said.. "(lower/higher numbers, or values, on your fuel map in ECUFlash)"

 

Yes that is correct, any one else have info on the main topic?

 

Yeah, we're on the same page then...it's just symantecs.

Someone posted earlier to adjust their AF ratios to change their IDC...which just doesn't make any sense.

 

You are right...I made a mistake and corrected it.

The boost on my car is @ 19 psi from 6K to cutoff. This was logged with a MAP sensor

 

You are correct. I made a mistake in my post and went back and corrected. Alas, by the time I figured out that I mistyped, you guys have already typed.

 

I run about 3 PSI more at 6000 RPM, hence the higher IDC.

 

On topic..

It seems you're running out of fuel due to the fact you're holding a lot more boost in the higher rpms..

[edit] I was going to guess this but your Zeitronix log doesnt seem to be holding much more boost? Maybe I'm mistaken..

Comparing your logs to mine your load is 280's from 4800-5400rpm
While mine at 5400rpm is 260's..

Your load at 6000 is 270 - Mine is 240..
Your load at 7000 is 236 - Mine is 220..

Plus your power output according to DataLogLab is.... awesome

 

You're making the power somehow with those very few mods and low boost..

So there probably isn't anything wrong with your pump/injectors. You just need more fuel or some meth

 

yea the power is there, but I still think something is wrong with the fuel pump or regulator, like you said my boost is not much higher than your at redline and my maps are the richest they can go, yet I am still at 12.1 AFR.

Seems like even if I am running a little more boost than you my afr's should be a little lower.

 

The differences in load are probably due to airflow over the MAF sensor due to differences in intakes?

The boost at the top is modest/appropriate so I think you're losing fuel pressure.

 

Yea even with the boost holding a bit more at redline, there is no way you should have 7's up top in your Fuel map with your mods. Somehow your fuel delivery cannot keep up on your car up top. I would check pressure, pump, leaks, etc.

 

I had this problem before the walbro and I though it was because the stock pump was running out, I installed a walbro and that did not seem to help at all.

I do have my boost gauges tapped on the line that runs from the manifold to the FPR solenoid, and I suspected that it might be leaking and thus not sending the right pressure to the FPR, so I replaced that line with a new one but that did not seem to change anything.

What else could be wrong?