Based on the information in this post, there is not enough to put blame on anyone. the shown CMR software shot means nothing, the MBT table they are showing means nothing, this is just a reference table, and again you have no idea what the customer was asking for when he requested his tune. For all you know he could of asked for a 108 OCT race tune, and also since this tune has been opened in CMR who is too say it has not been modified or changed? And again you bring up the point on Knk sensors being modified, Even in the canned diablo tunes the KNK sensors are modifiied and yes the timing is rasied, go figure!!. Too many variables to lay blame, also his original issue, doesn't mean the tune is bad or defective, there are 2 parts to the pcm hardware and software, I don't see how the tuning of his pcm would casuse his trouble code issue,PCM;s do go bad.. B&G has always been at the front of tuning development for our vehicles,They do nothing but to support our vehicles and our request for performance upgrade options when nobody else can. Anyways Just my thoughts