First timer here, I also have a 2.3 Ghia X, R reg, had it from new, just found this site a month ago fantastic! Last year we had a nackered cat, replaced it but still felt there was less than 80% power, nothing showed on the computer so replaced the flow meter then the whole exhaust system including another new cat, all Ford parts, still I hear the car labouring, a drone, sounds like the exhaust isn't getting out, but there is no way of that. Completely lost, as are the mechanics, I think they think I am just being silly, but I have driven the car from new, yes it can still pull away better than most cars if you put your foot down, but I still think I have lost the top 20% of my power, really pissing me off, perhaps a bit of nitrowould be a good idea! Good luck, and if you find the problem I will be happy to know. Keep up the great work