Originally Posted by samwichse
Honda already did the easy mods.
This is certainly true, but if you want to be radical and get some of the road worthiness compromises circumvented:
1. Tire pressures as high as you are willing. New tires work fine at high psi, with some loss of cornering traction, so use care.
2. Remove right side mirror if legal in your state. Use a convex mirror inside to restore visibility.
3. Block 90% of the front grill openings, assuming you can live w/o A/C. Monitor coolant temp with a good after market gauge. Thermostat is progressive and not fully open until 214F. Anything higher, you gotta remove some grill block.
4. Use a warm air pick-up fall, winter and spring - depending on location.
5. Install a full under belly.
6. Install a FAS switch. Know your terrain so you know where to FAS.
7. Tune the car perfectly.
8. Learn to recognize LB, how to get into it, and how to maintain it. LB is your friend!
9. Only drive in warm weather, or when the car is already warm
As someone else said, most of it is in technique, but mods do help some.
Just returned from a round trip to daughter's house. Some expressway(I'm slow), some gentle hills, some city streets with lights and stop signs. 106.4 MPG for 24 miles RT.