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Old 02-25-2014, 04:54 PM   #4
msgdsrf
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Join Date: Jul 2012
Location: White Salmon, WA
Posts: 263
Re: TH400 Modulator Valve

I believe the original line included a high point, well above the intake, to help with any blowby residue mucking up the modulator. Of course, not absolutely neccesssary though.
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