hi there im currently driving a suzuki swift 1.5
i have a few question about my car and performance part to ask since i am a newbie.
first thing of all what is the difference about 4-1 and 4-2-1? i tired both and i feels that 4-2-1 giv my pedal lighter but same no pickup. (im using just 4-2-1 and all standard just the back tabung i change already)
second i want to ask what time of air filter should i put? i ask bout simota airfilter and knn. and yet still i duno which to choose, open...
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