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Old 10-01-2005, 04:58 PM   #58
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Member#: 21980
Join Date: Jul 2002
Chapter/Region: NESIC
Location: Central MA
2002 PSM WRX (Sold)
2009 BMW X5


Originally Posted by WrxRonald

so if the ECU stops listening above 5k or so (2002).... do that mean this knock light will not indicate knocks above 5k??? how bout the utec? is it still indicating knocks above 5k rpms (or wherever the ECU exactly stops listening)?

i assume yes: just because the ecu isn't listening doesn't mean the UTEC isn't? dido for the knock light? or am i wrong and the utec and knock light are both being told by the ECU when to indicate knocks.....
Your assumption is correct. The UTEC and the KnockLight work independently from the stock ECU (as well as from eachother) and have their own knock detection capabilities. They listen throughout the entire rev band.
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