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To my fellow seniors on ZTH

I've been looking around on the internet on what you can do to improve the focus mk2.5 performance, meaning engine performance. Most of them (Malaysians) just says only thing you can do is remap, air intake, suspension and rims. Remapping has been done and air filter has been changed.

Anyone here has any experience in modding the mk2.5 engine wise?

Appreciate any form of ideas or wisdom on the subject :D

Edit: Forgot to mention, the car i drive is an...