Has anyone tried a recent "performance chip" in their Titan? I see some old posts about this subject but nothing recent. I know technology has advanced a lot over the years. I was curious because my brother bought one for his truck and he actually gained 2 MPG. (I know this because I drive his truck for work some times) I purchased the Thorton stage 3 performance chip and have ran it for 600 miles now and haven't seen any change. Just wondering if anyone else has tried any of the chips and had any luck with them?