Yea I just find it really hangs inbetween gears too long. Don't get me wrong it's still very quick power wise but if the dear change was tidied up it would be a heap better.
The Si drive controller was already in it when I got the car (first nz owner), it came with all the goodies from Japan, basically works as a boost controller mostly, gives me 4 boost settings, can also still use the normal si drive controls.
I haven't had it tuned, unsure if it was tuned in Japan or not, hard to know cause someone spent money on it there.
I've not owned a BH no, to be honest I hate the body shape of them, I've had a twin turbo BG5 manual, and a heavy modified GF8 manual. Nothing really compares to a manual, but I'd have to say with the auto trans in the BP been sorted out it would be a weapon. The motors are quick, and reliable as, mine has the VF45 turbo on it. I'd definitely go for a face-lift if you do go for a BP.
I really like the shape of them, much more sportier look than the boxy BH.
I'd love a full tune done, I've heard really good gains to be had on these.