I think it may be the throttle body. I was out at the local track the other day racing, and I found that after each race, my car idled a bit higher, until I stopped racing when it idles at 2100+rpm. Couldnt find any vacuum leaks...not throwing any codes, so im not sure what it is??? Its a Golden eagle intake manifold with a Skunk2 throttle body on a boosted C1.

TIA. Ben.