Turbonut
Join Date: Jun 2009
Location: Estonia, Europe
Posts: 1,197
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Knock window is essential for filtering out false knock events (since knock occurs only in certain crank angle), VEMS has that. I am not expert in knock sensing like John, but have tuned several cars with VEMS+knock sensors and it also works. Just requires some knowledge of how internal combustion engine works and some experience in tuning in general.
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'83 924 (2.6 16v Turbo, 530hp),'67 911 hot-rod /2.4S, '78 924 Carrera GT project (2.0 turbo 340 hp), '84 928 S 4.7 Euro (VEMS PnP, 332 HP), '90 944 S2 Cabriolet
http://www.facebook.com/vemsporsche
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