I seem to have an issue with my car at present where it loses power when accelerating through the gears.

I seem to get to 3rd gear 60mph and the car just revs and does not continue to boost as it should.

This continues throughout now gears 2,3,4 and 5.

After takign the car to Luton for a power run I advised of my issues and was told to purdhase a clutch.

I now have an AP Racing clutch that was fitted today by my local garage and guess what exactly the same problem.

Any Ideas??

 

Is the clutch slipping or not ?, ie are the revs rising but NOT THE SPEED ?
If a Rolling Road can't even spot a clutch that is slipping or not they should pack their bags and leave the country, and you should not waste your money with them.
You first need to establish if it is slipping or not, as the way it is described by you sounds as though it is more like a power problem, not one of clutch slip making though.
Third gear at about 50 mash the accelerator to the floor and brake moderatly at the same time, you will soon see if it is slipping.
tabetha

 

Unlikely a brand new clutch is slipping!

Sounds like the usual flat spot most MFI RST's develop at some time in their life.