I have tried this, sort of.
My SE spent 1 day at a Tuner in Slacks Creek on the dyno.
They eventually pulled it out and gave up.
He had issues getting it to override the ecu.
In the end, he said he would seek more info from supplier in Sth Africa, and get back to me.
He suggested he would need the car for a few days.
He never got back to me.
The end.
Info -
http://www.cnjmotorsport.com.au/speedshop/index.php?productID=248
Lakeside 1:02.94 Clubman 1:04.61 Sprint 1:00.81 Sportsman 1:04.27 National 1:28.36 WP 1:15.45 MtCotton 0:51.13 Symmons 1:12.2 Baskerville 1:08