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SVT Shelby GT500
+1 Knock retard okay?
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<blockquote data-quote="jn2" data-source="post: 15614161" data-attributes="member: 178010"><p>On the copperhead ECMs(11+) positive knock retard means the ECM is pulling timing. The stock tune has the maximum set to 1* of retard, so if you are seeing +1* right now but the car is running fine and there is no audible knock, then chances are it could just be blower, engine, or exhaust noise. If your tuner was to increase the retard value the ECM may end up pulling even more timing bc of the sensors/noise they pick up.</p><p></p><p>When ever your tuner sets up your new tune for the TVS they will adjust your Borderline Knock table by lowering the amount of timing you will run as load increases.</p><p></p><p>I am in the process of tuning a 2010 with a TVS on it and the knock sensors pick up a ton of noise so we had to go through quite the troubleshooting process to determine whether the knock was real or false. I am sure your tuner will do the same if they do run into any KR issues.</p><p></p><p>What we did was:</p><p></p><p>- 1 step colder plugs gapped @.028"</p><p>- Added VP Octanium</p><p>- Lowered spark advance to 12*</p><p>- Ran the engine richer(.75 lambda)</p><p></p><p>The results of all these things led me to the conclusion that the sensors were picking up random noise and it thought was knock when it was not</p></blockquote><p></p>
[QUOTE="jn2, post: 15614161, member: 178010"] On the copperhead ECMs(11+) positive knock retard means the ECM is pulling timing. The stock tune has the maximum set to 1* of retard, so if you are seeing +1* right now but the car is running fine and there is no audible knock, then chances are it could just be blower, engine, or exhaust noise. If your tuner was to increase the retard value the ECM may end up pulling even more timing bc of the sensors/noise they pick up. When ever your tuner sets up your new tune for the TVS they will adjust your Borderline Knock table by lowering the amount of timing you will run as load increases. I am in the process of tuning a 2010 with a TVS on it and the knock sensors pick up a ton of noise so we had to go through quite the troubleshooting process to determine whether the knock was real or false. I am sure your tuner will do the same if they do run into any KR issues. What we did was: - 1 step colder plugs gapped @.028" - Added VP Octanium - Lowered spark advance to 12* - Ran the engine richer(.75 lambda) The results of all these things led me to the conclusion that the sensors were picking up random noise and it thought was knock when it was not [/QUOTE]
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+1 Knock retard okay?
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