Did the copper cap

[road rage]

Drilled a 1/4 in. hole and installed. It works great, brings the rpms down quicker. Best .29 I spent so far

 

[Slider]

 

[vvzer0incvv]

I did the same thing a few weeks ago but i just started driving the stang this week and it made a big difference...I just have to figure out how to get the idle to stop hanging at like 1200 and just drop already.

 

[JonJon]

damn... i was hoping the copper mod would fix my hanging idle...
i don't have access to a drill so I haven't done the copper mod yet.

 

[S.D.-Stangman]

what the hell is the copper mod?

 

[JonJon]

what the hell is the copper mod?

http://forums.stangnet.com/showthread.php?t=451080
http://forums.stangnet.com/showthread.php?t=407093

 

[98GT_RagTop]

I tried the mod and it created an ungodly howl at idle which rose in pitch as I accelerated. I'm going to try increasing the diameter of the hole a little and see if that makes a difference. It did drop the idle though.