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Old 09-25-2012, 09:51 AM   #8
Cobb Tuning
Member#: 4803
Join Date: Mar 2001
Location: Austin, TX

Originally Posted by tiled00dles View Post
Did two more datalogs. 90 degree weather. Same tank of gas as my other log with zero knock. Why has knock returned?
Could be due to a heat-soaked intercooler - was the car sitting idling or moving slow shortly before the WOT run? One thing you may want to try is the low wastegate (LWG) version of the 91ACN map. You don't have any excessive reported knock, but we can see if it is impacted by lowering boost a little.

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