"Have you read the thread on IDS in diagnostic section ? "

I haven't looked at IDS in the diag section because for some reason I cant log into that forum - it says my password is wrong.

Yes I had a power saver fitted and didnt abort anything although at some point in the procedings it asked if there was a TC light on the dash ( and there wasn't) so I said NO

That said, all this may be in vain as the customer still hasn't brought it back to me so I have not had the chance to see where I went wrong.