One thing I am absolutely TERRIBLE at is documenting this kind of stuff.
Tomorrow or Thursday the VX trans is getting pulled back out, opened up and new bearings installed. I can shoot some pics if you guys like.
I hear ya on the extra throttle vs gearing but it looks to me like on flat ground the extra tallness is far superior than LB is. I have yet to go fast enough to get LB in 5th.
The thing with the ratio is, if you feel 5th is too tall for a given situation and you feel like 5th in the HX / DX trans would have yielded greater mileage all you have to do is down shift to 4th. 4th is ~ what 5th was with my DX trans.....
I can say that so far it's VERY hard to get the MPG reading to drop below 35MPG on the highway in 5th under any reasonable throttle percentage. I'm not talking about flooring it but am talking about slowly accelerating and again, no LB.
It really boils down to wider spacing 1 through 4th and 5th is just a bonus over the DX ratio.
The only tank I have logged was all DX trans.
I have ~80 miles so far on the VX tank and will definitely be comparing and sharing.
I5 where I live is 60mph from here south and 70mph from here north. I go south daily for work and occasionally north to visit a friend. That's the one I'm really curious about because before it was extremely hard to get a 40MPG average at those speeds with the DX gearing.
Either direction from here is rolling hills. Heck, everywhere you go around here is hills.
Honda Transmission Calculator by ZealAutowerks
I have been using this calculator, it's right on the money and I have confirmed their ratios ARE in fact correct because I have had the Si, DX, and EX transmissions all apart and counted each gear ratio.
I'm sure their VX/CX listing is correct just by their rpm / gear / speed calculations.
My tires are 185/60/14's.