Whifbitz had 650 odd proven on Surrey rolling road on a half bridge using pump fuel.
There\'s a video of it on YouTube, so it\'s possible. Depends how good your tuner and engine builder is
I\'m not doubting that it isn\'t possible for big power, don\'t forget that if the same car was dyno\'d on different dyno the power figure could be different due to the type of dyno, and also the reAding the computer gives out, as if it converts it to engine power then that will always be higher as with frictional losses you lose around twenty percent when the power finally gets to the wheels.
I will be getting my car dyno\'d on my twins and then when I have single conversion in the not too distant future I can show people the differences and power gains for the money and the difference in power delivery.
Don\'t think I will be near 600 BHP but over 400 on a single should be more than fast enough I think, only at no more than .9 of a bar