I recently replaced the battery on my car and now it is idling low and rough.
During start up it kicks over no problems but then the reves jump up and down from 500-1000rpm.
Before it use to idle at about 800rpm but now it idles at 650-700 and can really feel the car wobbling.
I have tried switching the programs on the Flash Tuner but it is still the same.
Any ideas what I will need to do to resolve this issue?

Cheers in advance

Dave