setting idle speed

[steviee7]

So tell me why we need to bridge the b and c ports disabling the idle volumetric system to set the idle on my carerra.
I had an issue with my idle so after driving i pulled into my driveway and quickly got my socket wrench out to bring it down. It runs and idles fine now. but what's really going on.
Should I bridge the two ports and see what happens?

Also, do I bridge the two ports first before starting the engine or does it matter if I bridge it while the car is running?

thanks

[steviee7]

bump

[Wil Ferch]

It should all be clear here, last sections--->

http://www.911chips.com/dmeconvr.htm

- Wil