I put a new oem exeddy clutch and flywheel in about 1500miles ago now it started slipping when I hit the throttle past half way but all my gears work fine and takes off fine if I give it gas slow

 

i'd take it off and visually inspect it.
sounds like something might have been installed wrong, or you've been getting on it.

but when did OEM classify as an Exedy clutch?

 

Cable is to tight. If not take it apart and inspect.

 

Adjust clutch cable first, then get back to us.

 

If you go to Bap Geon theIR OEM replacement for Honda is Exedy. I would do as the others suggested and adjust your clutch cable. Did you install the clutch in reverse?

 

you can only install the clutch one way. i know when my xtd was new it slipped alil until it was worn in then stopped slipping. as others said the cable may be too tight loosen it up some. this is why hydro clutches are so superior because they dont need adjusted.

 

I loosened the clutch cable up some seems like its grabing better haven't drove it that much yet only about 10 mins

 

id give it a good test pull hand brake put it in 5th rev it to about 5 grand and dump it if it stalls right then and there its not slipping anymore