ok...somehow my car began to make problem again....now car when start in idle...can hear "pop..pop"...sound from the exhaust and the car like wanna die trying to breath..when i start and drive the car..the car cannot go to high rpm...worse top speed only 120km/h(that also feels like the engine running about 180km/h already)....so i tot the problem maybe caused by bad spark plug...so i change the ori HKS spark plug to borch spark plug(new)...well bad idea...its getting worse then...
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