Placement of a knock sensor system on an engine is a nightmare in itself. The OEMs go through this all the time. The placement is critical so as not to get false knock signals from alternate engine noises. The pinging of headers could be enough to send a false signal. I would think it would be more trouble than helpful.
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Bob Woodard
Brighton, MI
2012 SRT8 Charger - 12.70 @ 111mph
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