what are 'normal' knock readings?
21 September 2006, 03:44 PM
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what are 'normal' knock readings?
I've got a secs data unit fitted to my 04 STI - what are normal readings to see on the knock reading?
21 September 2006, 03:59 PM
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Hi Rob,
any 'positive' value up to about 13 degrees (not sure if it ok above that because mine doesn't go over 13 by much).
I asked the same question a while back, as long as it's not a negative value it's ok. If it's negative the ecu is retarding KC, which is bad.
Anyone confirm I'm not talking total bollox????
any 'positive' value up to about 13 degrees (not sure if it ok above that because mine doesn't go over 13 by much).
I asked the same question a while back, as long as it's not a negative value it's ok. If it's negative the ecu is retarding KC, which is bad.
Anyone confirm I'm not talking total bollox????
21 September 2006, 07:04 PM
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My understanding is that it should be on maximum advance pretty much all the time... if it's not then it has detected knock and backed off.
When I had my ECU read it had advanced to the maximum - 16... meaning no knock had been detected. If it's reguarly detecting knock it will be down from this significantly...
Perhaps that's the equivalent of the positive / negative your talking about... also is this the short advance loop or the long one? I'm talking about the long one above I believe!
When I had my ECU read it had advanced to the maximum - 16... meaning no knock had been detected. If it's reguarly detecting knock it will be down from this significantly...
Perhaps that's the equivalent of the positive / negative your talking about... also is this the short advance loop or the long one? I'm talking about the long one above I believe!
21 September 2006, 08:20 PM
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Originally Posted by Trap2Terrorist
Hi Rob,
any 'positive' value up to about 13 degrees (not sure if it ok above that because mine doesn't go over 13 by much).
I asked the same question a while back, as long as it's not a negative value it's ok. If it's negative the ecu is retarding KC, which is bad.
Anyone confirm I'm not talking total bollox????
any 'positive' value up to about 13 degrees (not sure if it ok above that because mine doesn't go over 13 by much).
I asked the same question a while back, as long as it's not a negative value it's ok. If it's negative the ecu is retarding KC, which is bad.
Anyone confirm I'm not talking total bollox????
not too sure of the techical side ben but i always read 0 if off the gas.
I'm not getting anything other than normal activity on the knocklink monitor either
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