I have HKS Hi Power exhaust 3", which is a bit loud (not for me though)..
so, what's the best way to lower down the noise inside the cabin? I dont want to change the exhaust yet because I like the sound and...
i already buy the vacaum meter...how to connect the hose at enjein...im using carb...the cost to install at machanic too expensive 4 me so i decide to DMY...How aa???