Carl. Posted March 22, 2010 Share Posted March 22, 2010 is the small brass/copper pipe reducer thing needed in vaccuum pipes? ive got it in one of pipes but couldnt understand why it was needed Quote Link to post Share on other sites
DavidAshton Posted March 22, 2010 Share Posted March 22, 2010 Restricts air flow, preventing spiking, giving more stable boost.Not many people use them and they make little difference. Quote Link to post Share on other sites
Steve GT Posted March 24, 2010 Share Posted March 24, 2010 i didnt use mine lol Quote Link to post Share on other sites
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