Hey Steve. What event u went to ?
Btw, I think performance mods will only inversely proportional to fuel consumptions. U get better performance with worse consumptions. It works that way I guess.
Its a whole thread about modding GTi or 4g93p. I guess u should do up your handling first before u go for better performance.And remember , even if u have the fastest GTi on the road, but once it get stolen u'll have nothing. So upgrade your security system first =)
After that - Exhaust system (including extractor), plug and plug cable, throttle body, intake manifold, port and polish, engine balancing, thin metal gasket, higher compression pistons, high cams + adj pulley. Lastly would be engine management, perhaps E-Manage Ultimate.
To sum it up, including all I mention from A to Z, u'll need around 15k perhaps. =)
Or another choice , go buy a GSR halfcut rm5800 + installation RM1500 + overhaul RM1500, some modding RM2000 = estimately around 220 +- whp
What am I typing la this late morning. Sorry la ngantok la my head going sideway =P