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Whistle while you work... GM-8 and soot trap-ectomy

To get the good whistle you need both a nonrestrictive intake and a nonrestrictive exhaust, since the exhaust needs to be free flowing to get quick spool. I didnt have any whistle with stock intake, as soon as I put the cone on the GM4 whistled all the time. Also helps to have a power program.

But yes the GMx will whistle happily
 
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