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Digging up this thread in hopes someone could help assist. Read every page and like to get a little more confirmation. Looking to do this mod to the new Invidia
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06-09-2017, 10:20 PM
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Join Date: Jun 2013
Location: Sydney, Australia
Posts: 230
Drives: '09 Z34 BP Turbo V2
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Digging up this thread in hopes someone could help assist. Read every page and like to get a little more confirmation.
Looking to do this mod to the new Invidia CBE I've installed (that I'm already regretting coming from a Motordyne CBE). It's droning horribly from 1900-2800. At around 2000 RPM it seems to reverberate across three peaks, strangely 50hz apart... ~100, ~150, ~200. Past this point 150 becomes the dominant droning frequency. Photos attached of both occurrences. According to the formula in this thread I get a length of 22.5"... but that seems quite small compared to the 28-30 I'm seeing thrown about. Does this still seem right? Speed of Sound / ( (frequency) x 4 ) 1125 / ( 150 x 4 ) = 1.875ft > 22.5in Last edited by MoulaZ; 06-19-2017 at 12:27 AM. |
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