Re: BA XR6 naturally aspirated IDLE PROBS
I see you metion you have taken it to Ford and they have upgraded the tune which has fixed it but it has returned again ,is that right?.
This would suggest it is in the tuneing. If Ford upgrades with a better tune that fixes it then when you reflash with the CAPA tuner you will completely lose the Ford upgrade. Remember the standard Ford tune you have in the CAPA box will not be the upgraded version Ford reflash with but will be the previous version.
71 429SCJ Mustang