Nick Williams 102, Hanging Idle

[FrumRoll]

I have installed a Nick Williams 102 onto a FAST 102 in a LS2 CTS-V. It idles perfectly on startup, but if I clutch in at rpm when coming to a stop the idle will hang at the previous rpm. It will return to idle in quick order when I come to a complete stop, but it's still annoying. I can drive around the issue by engine braking down to idle, but I don't feel this should be necessary. Any idea where to start? I did a quick search and didn't come up with anything. The only changes I made were the typical recommended changes I've seen for a NW 102(ETC Scalar and DTC 121).

I've attached my bin file.
ThrottleBody 041714.hpt

Thanks - Derrick

[MikeOD]

Match up the idle overspeed spark tables for PN/Coast and Gear. That should fix that for you.

[FrumRoll]

Match up the idle overspeed spark tables for PN/Coast and Gear. That should fix that for you.

Worked perfectly, thanks for the help.

[MikeOD]

No problem, happy to help when I can.

[Bob Scocca]

Hi Derick, I just read your post about the Nick Williams throttle body.
I'm contemplating using the same set up on a LS7.
Where you able to get it to idle correctly and not hang.
What else did you have to do.
Thank yo for any info.
Cheers,
Bob

[MikeOD]

Hi Derick, I just read your post about the Nick Williams throttle body.
I'm contemplating using the same set up on a LS7.
Where you able to get it to idle correctly and not hang.
What else did you have to do.
Thank yo for any info.
Cheers,
Bob

Here's what I told him to do.

Match up the idle overspeed spark tables for PN/Coast and Gear. That should fix that for you.

Here's how he said it worked.

Worked perfectly, thanks for the help.