Fredf , I know your happy with the service at K&H but maybe it would be worth the drive to Georgetown to get another opinion . The changes in the tune should make you laugh out loud. I will volunteer my 2010 for you to drive and compare to yours . Number comparisons are great but nothing beats seat of the pants feel . If you can come to the Burlington , Hamilton area you can eliminate any doubt you have on wether it's worth it or not . And why would you not take APR's advice to send some charts there the ones that developed the tune ?