I'm not sure yet what chip he uses. All I know is he has done a bunch of SLKs and CLKs and comes up with around 15% improvement. That's $400 for the chip and tuning. I'll let you know all the particulars when it's done.

All I'm stating now is what I've been told to expect. I will have the hard data when it's done.

P.S. You won't have to go all the way to Va. Beach. He has 2 shops. One in Williamsburg and the other in Hampton.