Running rich at idle using ID1000's

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11-10-2013
GPGTP

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Running rich at idle using ID1000's

02 Z06, has a built bottom end but unsure of the cam, if it has one it's small (idles at 35 kpa). F1 procharger, full exhaust, E85, ID 1000's.

I used the injector data off of the injector dynamics website and double checked it, I don't see anything wrong. However, this thing just does not want to lean out at idle when I make changes to the MAF and/ or VE table, Injector msec is at about 2.1 at idle when it should be at about 0.5-1.0 ish. If I put it in closed loop the computer starts pulling fuel out put it's not happy about it. Something is preventing me from pulling fuel out, any ideas would be greatly appreciated.

Please excuse my hacked VE table, I was proving a point that my VE changes weren't doing squat in the 2 bar enhancement.

Attachment 41749 Attachment 41750
11-10-2013
danieloneil01

Reason why you're trying to command a 9.8:1 AFR?
11-10-2013
mowton

Quote:

Originally Posted by danieloneil01

Reason why you're trying to command a 9.8:1 AFR?

E85 fuel stoich AFR is 9.8
11-10-2013
GPGTP

could it be the "min fuel Miligrams" under the "transient" table in fuel? I read that but this is the first I heard of it, I have no idea what I should set it at though. Thoughts?
11-10-2013
GPGTP

http://www.hptuners.com/forum/showth...-in-78mm-Turbo

found this. Would be nice if they would make a note of this, would have saved me a few hours of time yesterday....
11-10-2013
HartRod

Is this only required on forced induction?
11-10-2013
GPGTP

Quote:

Originally Posted by HartRod

Is this only required on forced induction?

no it's because of the larger injectors.
11-10-2013
HartRod

I'm running the Siemens SD80s on my setup, do you think this is necessary for them? Thanks,

Rob
11-10-2013
GPGTP

Quote:

Originally Posted by HartRod

I'm running the Siemens SD80s on my setup, do you think this is necessary for them? Thanks,

Rob

I'm assuming you will.
11-10-2013
HartRod

Quote:

Originally Posted by GPGTP

I'm assuming you will.

Crap! Just figured out that E38's don't have this an option....
11-11-2013
edcmat-l1

E38s don't have this same problem.
11-11-2013
SultanHassanMasTuning

Min Fuel Miligrams?
11-11-2013
Brice

Because it's not an real E85 fuel ... maybe E70 ...
In winter we have a E70 here in Europa.

You have you buy an E85 composition tester.
11-11-2013
GPGTP

Quote:

Originally Posted by Brice

Because it's not an real E85 fuel ... maybe E70 ...
In winter we have a E70 here in Europa.

You have you buy an E85 composition tester.

Not sure who this was in response to. My issue was as stated.
11-11-2013
68Camaro

min fuel miligrams. I have had to lower this table to get big injectors to lean down at idle. usually around .020