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I have a TWM system on my 384 Stroked Clevland using their one piece F1 type filter that covers all of the trumpets. It has special foam that does not ignite but is very expensive to replace, I had to send to UK then back to Australia.The system breathes very well, and on the Dyno did not make any difference with restriction when the filter was removed or when it was left on.It is very easy to remove, it has 6 snap on screws attached to a base plate. The only disadvantage is that the trumpets cannot be seen unless the filter is removed.Motec is used with 500 rear wheel HP.I love it!
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