i nid help here bro.... i hav 1 4 pot front disc brake for my wira ( since i converted to a powerful moded mivec turbo) and plan to install to my car.... but for the rear i keep drum.... any effect?? i m afraid of my own safety since i not dare to have any risk of my braking system since i heard ppl say rear disc is nided........ nid advises pls 

plan to change after gt budget since i spent 20k for my car oledi but now still din drive it...still at workshop..... problem with wiring...
any 1 can help... when emanage put in, the error code of the rpm meter goes out....... cannot use the meter box... gt sot.... but the meterbox is fully ori and no damage done..