of engine
u can change air filter (K&N o open pod like apexi's)
denso idrium spark plugs
lightened & Dampered Crank Pulley
Port n polish
Performance Cam shaft
Adjustable Cam Gear
form work exhaust system (4-2-1 til the end :P)
http://www.bmwclubmalaysia.com/wp-content/uploads/2007/09/pst_atc07_fariqehairuman.jpg
Chengdu (China), 16 September 2007 – The PETRONAS Syntium Team’s charge in the 2007 Asian Touring Car Series continued this...
Some cars with 4g18 overseas have low end high torque 4000 n so on.. but why msian 4g18 low end torque got 2750 only? is there any part we can change to get same power as overseas 4g18? lol i dont get it