Hi guys, I've got a ed xr8 that I've had troubles with its idle for some time! When I start it up from cold it idles sweet but after 5min of so it drops down and starts to hunt a bit(when I unplug the isc motor it makes no deference when it's hunting, where as if I unplug the isc in the first 5min it drops the revs like it's working ok) if that makes sense? I've set base idle, timing and TPS voltage! I've changed isc valve also! Any ideas guys? Cheers

If you're using the original untouched ecu it's probably got leaking capacitors, can cause all sorts of dramas. Same with ignition module TFI.

Have you done an EEC self test?