Help, had a COS made for my car and won't idle.

[tdmkr496]

I'm new to EFI Live, I just finished building an 88 Mustang with an 03 5.3, 04 4L80E, 80lb injectors, no MAF, 3.3 bar map sensor, 411 PCM, and a S475 turbo. Since I was new to this I had someone write me a tune to start the car but it runs very rich and after running for 5 minutes it fowls the plugs. Could someone please take a look at this and offer some advice, I would really appreciate it!

[tdmkr496]

I would like to check to see how my MAP sensor is scaled. I looked for it yesterday but was unable to find it, could someone give me a hint??

[joecar]

In the Search box, type C6301 (in uppercase) and click Search.

Looks like it's scaled.

[joecar]

Looks like you might need to do idle tuning...

more info:

Idle Tuning
showthread.php?4661-Idle-Tuning-Helpful-Info-Inside
showthread.php?14439-Idle-Tips-amp-Tricks
showthread.php?5866-Auto-VE-questions
showthread.php?14153-scan-tool-wont-log-rafig-or-rafpn
showthread.php?14435-Need-help-Can-Start-Car-but-dies-when-I-give-it-any-throttle-before-going-to-CL
showthread.php?7011-ETC-cars-and-IAC-parameters
showthread.php?14544-Working-on-my-idle-tune
showthread.php?14794-Help-with-open-loop-%28cold-start%29-tuning
showthread.php?149-Idle-%28Transition%29-Tuning
Stumble-3-seconds-after-cold-start&p=178921#post178921
Idle-Tips-amp-Tricks:post#46

More Idle Tuning
showthread.php?t=149
showthread.php?t=5866
showthread.php?p=86553 post #17
showthread.php?t=2630
showthread.php?t=473

Throttle Cracker/Follower
showthread.php?t=3568
showthread.php?t=4081
showthread.php?t=5406
showthread.php?t=5940

[tdmkr496]

Thanks for the reply, I will read those. I logged a little tonight, I'm slowly getting the hang of this.

[tdmkr496]

I couldn't get the car to idle at all with the 3.3 bar map sensor so I bought a Cobalt SS map sensor. I currently have it scaled at 207, and have messed with it moving it up and down but still only get 105 KPA at idle, any suggestions??

[joecar]

~200 is the scaling for a 2-bar sensor.

[tdmkr496]

I was reading up on the tutorial last night and it said to change the value in the RPM high to 2000, but when I did that the check engine light came on. Also do I need to change the value in the yellow arrow?