/drift mode on
When I had my GTR33v many moons ago there was a chap that ran a very tweaked one. It had a dashboard mounted computer for almost real time map adjustments. It could be adjusted around the knock point using the additional (many) things bolted to the engine. He used 98/99 all the time and when doing anything silly used some US octane booster imported.
His idea of mixing was a bit like Olivier Reeds idea of "roughly a double".
95 regular as he used to call it was about 750hp
98/99 super was in the region of 800hp
98+booster was depending on the mix he made, 900+
Then one day on 99 momentum (+ a lot of octane booster) at a track day he blew the brains out of it, £20k for the rebuild. It was about the only RB26 engine I ever saw detonate. The more you go hunting the edge of the envelope the sharper the cuts are.
I use 99/98 whenever I can. Mostly because I do little milage in the Aeros and want as little BioEthanol as possible. But if 95 goes in I don't panic.
