Awesome feedback! I did a minor tune and reset the timing ( included plugs, cap & rotor @ 190k ). My timing was around °7+ (not knowing I was pinging; I thought I had a loose bolt rattling around), so I reset it to factory around °3 advance. I lost some low end torque from that advance but gained a smooth transition to upper rpm ( a nice linear power band ).
I went from 11.6-12.3 mpg's to 13.8 mpg average driving a mix of street and freeway driving these last 2k miles. I fill up the tank around the 280-300mile range, I'm not daring to take it down like you Will to that 370 range. Granted I'm on stock tires, but are you on 35's?