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This is how you make an S55 engine sound good!
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10-03-2019, 08:39 AM
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bobbyh907
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Here's what I did. 5" oval midpipe. In the video first rev is valves closed, second is open. Definitely less rasp with the valves open. Need to get a better microphone besides a cell phone recording to really tell though.
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Bradycat77
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