is it as simple as just unscrew them and fit new ones, three garages round here say its too difficult, and dont really have the time for the 250 mile round trip to Zworld....

in theory, yes, but they'll be very tight... If your replacing them, then you break the old ones off so you can get a normal socket on to remove them. How I did it, was break the old ones off, but with the nut on the sensor being a bit soft, it actually screws into a boss on the turbo elbow, I removed that with the sensor in it, put it in a vice, and removed the sensor, oiled it up then re-fitted the boss, then the O2 sensor. It is a bit cramped, but if you remove the battery and a few other bits, and use a couple of extensions and a universal joint you'll get them, I did both mine first time in less than 2 hours easily... You'll need an O2 sensor socket tho, it has a slot in the side for the wires... HTH...

and the garages round your way must be run by little girls :)

yea they're crap round here. and kwik fit only fit their own parts.

also tudor once you did your did you notice and difference in performance? ie fuel usage/ engine running ?

yeah mate, I got mine on conzult as it was overfuelling badly, and they were both goosed! Changed them and it was miles better mate, she's still not quite on the road, but conzult readings were correct, and a few test drives I could definately tell the difference... If your stuck, you can just unplug them both, the ECU drops into a bog standard setting, lots of people on here are doing that and like the results, give it a try?

are you sure they are knackered? what are your symptoms?

had them on conzult, and car is massively overfueling. just hoping to regain reasonable fuel usage as mine is horrendous, i have unplugged them but its no better.

had them done now.