audi s4 problem

[davis s4]

so i have a 2000 audi s4. with 3" catless down pipes apr stage 2, apr bi pipes and all new pulleys. so here is my problem my clutch was installed about a year ago its a clutch master stage 3 with a fidanza flywheel. well when my car is under a big loud like 5th or 6 gear at 2.500 rpms. if i give it 75% throttle or full it will jump a little bit in rpms like im spinning then comes down and does fine. im guessing my clutch is going i have no idea of anything else it can be. i know i do have a nice exhaust leak and boost leak possibly. anybody atleast can take a wild guess where i should look

[wannabeS4]

Definitely sounds like your clutch.

[imola_s4]

I vote clutch slip.

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