tatchai 發表於 2014-3-12 13:57

死氣喉問題

早幾日架runx見條原裝喉就散就散,去左元朗換左條土炮死氣喉,渣左幾日覺得好鬼嘈,係個回壓太大架車成日胡胡聲,想請問有冇方法可以令佢靜啲呢?
(Post76 Android 手機版送出)

smokeyduck 發表於 2014-3-12 18:02

most aftermarket exhaust system "make" noise.using stainless steel means it can be thinner on tubing and the silencer surrounding, it results in weaker sound barrier.also since most people prefer "race car exhaust sound", so the aftermarket exhaust contain much less sound absorbing material inside.if you want quiet silencer - get the original.

by the way, "back pressure" is not needed in any good exhaust system.the diameter of the tube used is to maintain the flow velocity.most people think a smaller diameter gives higher back pressure which is quite true but to large the diameter cannot gives the velocity and pulse when not up to the rev range.as we do not have variable diameter tube so we have to sacrifice.
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