idle% vs Target Table and more??? - SRT Forums

relenger · 09-01-2009, 08:20 PM

What does the "idle% vs Target Table" Do?

does it tell the IAC Where to go (open or close) to achieve the given Rpm?

nutz · 09-01-2009, 08:49 PM

yuppers

relenger · 09-01-2009, 09:15 PM

Quote: Originally Posted by nutz

yuppers

So what is idle learned value?

Help says :>Description: The idle percentage above or below the target idle. Zero percent would represent no correction to the IAC motor to achieve the target idle.

So when it says idle leaned value = -8

Does that mean it moved the IAC valve to correct my idle% vs target table?
i guess i dont fully understand whats going on here?

**supermech21** · 09-01-2009, 09:25 PM

Thats the amount that the ems is changing, it should be oscilating some(not much depending how well the car is dialed in), i think?

Correct nutz?

nutz · 09-01-2009, 09:54 PM

yup if you have -8 the ems is taking 8% out of the idle % at that RPM. if you go back into the idle % and take away about 7% (percent change 93) it should get ya closer

**supermech21** · 09-01-2009, 10:06 PM

Quote: Originally Posted by nutz

yup if you have -8 the ems is taking 8% out of the idle % at that RPM. if you go back into the idle % and take away about 7% (percent change 93) it should get ya closer

And the way you would do that?

Idle % VS target table > Right click percent change > .93 ....Correct? I feel like im missing a step, where a smaller graph pops up, high light entire graph, then percent change, .93 ....right?

chuck's_srt-4 · 09-01-2009, 10:14 PM

Quote: Originally Posted by supermech21

And the way you would do that?

Idle % VS target table > Right click percent change > .93 ....Correct? I feel like im missing a step, where a smaller graph pops up, high light entire graph, then percent change, .93 ....right?

If the target is 950 rpm, and let's say that the % table calls for 35% for that RPM, but the learned value is -8%, you don't necessarily want to make a global change of 7 or 8% all the way across the table. Make the necessary change for 7 or so % at that RPM point.

If you want to fine tune the rest of the Idle% vs. Target Table, change your target idle, and see what the correction is for that RPM, then adjust your Idle% vs. Target to zero out the correction for that rpm (Learned value).

nutz · 09-01-2009, 10:30 PM

Quote: Originally Posted by chuck's_srt-4

If the target is 950 rpm, and let's say that the % table calls for 35% for that RPM, but the learned value is -8%, you don't necessarily want to make a global change of 7 or 8% all the way across the table. Make the necessary change for 7 or so % at that RPM point.

If you want to fine tune the rest of the Idle% vs. Target Table, change your target idle, and see what the correction is for that RPM, then adjust your Idle% vs. Target to zero out the correction for that rpm (Learned value).

what he said

nutz · 09-01-2009, 10:48 PM

when ever I tune i will turn off the feed back and make sure my fuel and ign maps are very similar in the cells close, also -0- out the idle ign and idle fuel feed back this way you wont fight the corrections the ECU makes

relenger · 09-01-2009, 10:55 PM

So first i need to get the fuel map at idle where i want it as far as AFR goes then do the Idle% vs. Target Table? or other way around?

**supermech21** · 09-01-2009, 11:33 PM

Quote: Originally Posted by chuck's_srt-4

If the target is 950 rpm, and let's say that the % table calls for 35% for that RPM, but the learned value is -8%, you don't necessarily want to make a global change of 7 or 8% all the way across the table. Make the necessary change for 7 or so % at that RPM point.

If you want to fine tune the rest of the Idle% vs. Target Table, change your target idle, and see what the correction is for that RPM, then adjust your Idle% vs. Target to zero out the correction for that rpm (Learned value).

My bad, i was on another thought process.

relenger · 09-02-2009, 05:06 PM

Quote: Originally Posted by relenger

So first i need to get the fuel map at idle where i want it as far as AFR goes then do the Idle% vs. Target Table? or other way around?

?????? im having a tuff time getting it to idle smooth and lean...

How did you guys get your stuff going good idle wise?

05plsrt4 · 09-02-2009, 07:23 PM

For me, my idle was never smooth until I made the TPS read around 1% all the time, then the advanced idle stuff will actually work and try to maintain the desired idle.

What i did before was use the idle feedback min/max and put them at +/- 2 and set the idle% VS target table as close as I could. It kept the idle smoothish...but it still jumped around quite a bit....even more when the fans turned on.

I also found that in my car it doesnt idle worth a shit at anything leaner than 13.5:1. I'd love to make it leaner so i dont get all that black crap on the back of my car.

never2muchboost · 09-02-2009, 08:04 PM

good luck trying to get idle fb close to 0. i usually will have my idle fb around -4 to -5 and for the most part it wont oscillate much and hunt.if you are in the positive numbers it is wrong. above curb idle you can get it to around -1 to -2

nutz · 09-02-2009, 08:38 PM

a good way to get it close is to change your load and rpm to match exactly what idle sees (get it in the bullseye)