Yep, mistral crossover installed. Alas, for my lovely mistrals were recently forced to be replaced due to fate (and a myopic taxi driver). So now I have the mivvs on her.
Re mapping: I had purchased the necessary cable, and was intending to guzzdiag her, but after fresh plugs, filter clean and baseline tps reset, she is back to running like a peach. With added super mega bonus of eradication of any (noticable) pinking. Yayy.
If you can stomach the price, the mistrals are just lovely.