Ok here is an idea. Electronic turbo...mild boost. Get a turbine and modify it to fit a 12v high speed brushless motor (seen some at 70000rpm at 50kW)....Drive the compressing blades into trottle body. Turn on only...
what i know from friends is that the VJ23 are considered quite big turbo... but just wanna find out more... if using a 1.8 engine what bigger turbo can be used without increasing too much lag??