Spike/knock values
16 April 2009, 08:24 PM
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Spike/knock values
hi there people just would like to ask what is the maximum knock spike you have had on your PFC? i believe my engine is detting at high revs in 4th and 5th as my commander shows knock values at 80-90, but the engine light does not flash. could there be a basic cause for this? i.e something touching on the engine? do those knock value mean my engine is getiing damaged inside?
all sensible opinions welcome
many thanks
all sensible opinions welcome
many thanks
16 April 2009, 09:36 PM
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the only way it wouldn't flash with peak values that high is
A) the CEL bulb is missing
B) it has been disabled in the map
C) the mapper heard no det at those values so set the knock warning higher
the latter of which I would be surprized as impreza engine usually a lot lower than that.
Simon
A) the CEL bulb is missing
B) it has been disabled in the map
C) the mapper heard no det at those values so set the knock warning higher
the latter of which I would be surprized as impreza engine usually a lot lower than that.
Simon
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16 April 2009, 10:48 PM
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nope have not touched the avcr and never have! i set channel 1 on my commander to display knock that showed a spike in the line graph. befroe it did show cel light but now it dont 
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