Say if i am in 3rd and decide to put my foot down all the way up to the limiter when it reaches say 6-7k the power cuts out then comes back in a second later.
i had a very similar issue it would rev up to the limiter slowly no probs but if you try to get there fast it would cut in and out like you said until it reached the rev limit
turned out to be spark plugs gaps dont know how it happened it was like it when i bought it