Originally Posted by LightSpeed

Did you try the Stage 2 cams without the ecu mapping?


The standard (locked) ECU adaptive maps cannot manage the Stage 2 (569) cams, it exceeds the maps limits. The information I had from the very knowledgeable dyno operator, at Krazy Horse in the UK, was that you need an unlocked and set up ECU mapping for anything more than standard cams, a free flowing exhaust and filter (Stage1)