The only "mods" I've done to the temporary ride is the IAT resistor trick and tires at 60 psi. Also I have been severly abusing codfishing and lower speed limits. The new car is currently undergoing a "headectomy" and will get the Singh grooves and the Power Lynz in the intake runners and, I think, the grooves on the backs of the intake valves.
Horsepower is how hard you hit the wall, torque is how much of the wall you take with you.
Next fills will be interesting for the battle at the top. Basjoos is going to be dropping a 90 MPG tank in a few days.
If I didn't have to drive up into the NC mountains on I-26 to Asheville to get to work and confined my driving to the local SC rural roads, I'd have no problem with getting consistent 90MPG tanks. As it is, it has finally cooled off enough for me to comfortably work outside now, so as soon as I finish rounding up a few remaining materials, I will get the front wheel skirts and a 3-piece complete boattail built and installed, both of which should help improve my mileage on the interstate portion of my commute.
The VX will be sitting in the garage for the next week or so while I take the family to the beach in the Prius. I consistently get 49-51 MPG at 70-75MPH cruising speeds. Recently I swapped my worn out Integrity OEM's with Kumho A/S 795's. I am running 40 PSI on a 35 PSI max sidewall. It would be interesting to see if there is a difference in FE due to this change. It's not A-B-A but at the very least I would like to see no reduction in FE.