it just happens first few mintues everytime when I dirve. When I hit the gas pedal hard, the car like want to die, shaking, like something stucks and basically it is not moving. and after one or two second, the car start to run in full throttle.my recent mod is timing belt, UDP, cam gear, custom piping exhaust. , also I saw some oil leak under valve cover. what could be the problem?

Ken

5zigen rearsection/Cherrybomb glasspack resonator/Apex'i
cone intake/AFX UDP/Fidanza cam gears/Power Stop cross drill rotors(front)/shunk2 coilover/Koni adjustable (front)/KYB struts(rear)Konig V-racing front bar/Enkei RSF2 17" with Kumho/ Nakayama
projectors /APC Clear tail light and interior mods

Ken


5zigen rearsection/Cherrybomb glasspack resonator/Bosal header/injen short ram intake/ported TB/AFX UDP/Fidanza cam gears/Power Stop cross drill rotors(fron

don't run the car hard when you first start it up.. very bad on engine.

Mine does that too. Just ease the throttle up to WOT

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but I would let the car warn up until 1/4 of the thermometer, does it still cause the problem, cause I dont have this problem be4 I did those mods.

Ken

5zigen rearsection/Cherrybomb glasspack resonator/Apex'i
cone intake/AFX UDP/Fidanza cam gears/Power Stop cross drill rotors(front)/shunk2 coilover/Koni adjustable (front)/KYB struts(rear)Konig V-racing front bar/Enkei RSF2 17" with Kumho/ Nakayama
projectors /APC Clear tail light and interior mods

Ken


5zigen rearsection/Cherrybomb glasspack resonator/Bosal header/injen short ram intake/ported TB/AFX UDP/Fidanza cam gears/Power Stop cross drill rotors(fron