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SN95 Cobras
IMRC vacuum leak?
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<blockquote data-quote="mwolson" data-source="post: 14767813" data-attributes="member: 16006"><p>The PCM bases the bank AFR on the time between the combustion event and the time it takes the exhaust to get to the O2 sensor. The value in the tune is called O2_Transport_Delay_In_Revs. If you have long tubes and have not changed that value, it will definitely screw up the PCM. Even if you have the stock exhaust, the PCM may not have the delay set exactly correct for your engine. It is not too surprising to me that it got the bank wrong.</p></blockquote><p></p>
[QUOTE="mwolson, post: 14767813, member: 16006"] The PCM bases the bank AFR on the time between the combustion event and the time it takes the exhaust to get to the O2 sensor. The value in the tune is called O2_Transport_Delay_In_Revs. If you have long tubes and have not changed that value, it will definitely screw up the PCM. Even if you have the stock exhaust, the PCM may not have the delay set exactly correct for your engine. It is not too surprising to me that it got the bank wrong. [/QUOTE]
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IMRC vacuum leak?
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