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I, along with a few others I'm sure, will be eager to see a 1:1 comparison results.
When I first read this thread and review your post #9, my stock CA car/ECU seems to behave that way, which is why I'm interested in seeing if there are any steady-state hwy MPG differences (ie Federal allowing a leaner ratio than CA) and not just the actual time difference/ability to stay in lean burn. I can stay in fairly easily even with 70+mph speeds.
Looking forward to updates.
I'm likely doing some light, unnoticeable aero mods with my next oil change. Been just getting my HX back to showroom running condition with tune-up parts and EGR chamber cleaning so far. I like having the info from other 6th gen HX owners on here.
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