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ECU upgrade... time wasted
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<blockquote data-quote="ALBundy" data-source="post: 141348" data-attributes="member: 15"><p>Asking a similar question twice...</p><p></p><p>IN the stock ECU setting, fuel octane variation is taken into account and hence the timing is not advance to the fullest.</p><p></p><p>When an ECU is remapped, the ignition timing is advanced to take advantage of the higher gasoline octane. Now, if someone uses say RON89 will he experience knocking or pinging? Answer is yes. The remapped ECU is <em>probably</em> not programmed to retard the engine timing <em>significantly</em> to prevent knocking or pinging when RON89 gas is used. As Dan mentioned knock sensor is just a sensor, its the ECU that retards/advance the timing.</p></blockquote><p></p>
[QUOTE="ALBundy, post: 141348, member: 15"] Asking a similar question twice... IN the stock ECU setting, fuel octane variation is taken into account and hence the timing is not advance to the fullest. When an ECU is remapped, the ignition timing is advanced to take advantage of the higher gasoline octane. Now, if someone uses say RON89 will he experience knocking or pinging? Answer is yes. The remapped ECU is [i]probably[/i] not programmed to retard the engine timing [i]significantly[/i] to prevent knocking or pinging when RON89 gas is used. As Dan mentioned knock sensor is just a sensor, its the ECU that retards/advance the timing. [/QUOTE]
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ECU upgrade... time wasted
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