my multi-purpose engine

I made a multi purpose engine. it has decent power, reliable, light, efficient, cheap to make.
any ideas to improve the above attributes?
P.S: the how much power I can possibly get out of it has been answered already, 480 HP and 504 ft/lbs (check 2.2 Boom boost thread.)
2.2 L EFI, Twin Cam VVT+L, Turbo, 280 HP and 260 ft/lbs; 20 % fuel efficiency, 70K+ MTBF.
[url][URL=http://s1329.photobucket.com/user/dwelasri/media/Screenshot26_zps8636aa54.png.html]
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any ideas to improve the above attributes?
P.S: the how much power I can possibly get out of it has been answered already, 480 HP and 504 ft/lbs (check 2.2 Boom boost thread.)
2.2 L EFI, Twin Cam VVT+L, Turbo, 280 HP and 260 ft/lbs; 20 % fuel efficiency, 70K+ MTBF.
[url][URL=http://s1329.photobucket.com/user/dwelasri/media/Screenshot26_zps8636aa54.png.html]
