For ME i want at least 400bhp/ton
My Cossie was totaly stripped out (1050kg?) and running 2bar on T34 and greys, and could easily and often use all of its power on the road, and often wanted more. And that was with my car having APPALING grip, with more grip idve wanted a lot more, a lot more often.
IMO if you do it for the numbers game, your a fucking fool (many do tho, always at RRdays, but never use the car hard)
Every ones different, but 400bhp/ton is about right for me and how i drive, more providing the car could use it, traction wise.
Some people are happy with stage1 and reckon you cant use more on the road. Bollocks