b7/z6 mini idle issues

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yeah, it's a vtec.
Aight folk this is what I've got. Did the tranny swap and hydro conversion, now it idles funny. It will rev to 2600 then drop to 1100 then back to 27-2800 back to 1100 and so on. I have codes 6 and 7, replaced the tps, and still the same. What gives?