Quote:
Originally Posted by Dust
Would be interested to know how your MPG goes up or down.
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My hypothesis is that highway mpg will go up slightly, however I refuel from commercial (measurable) sources so rarely that good data will be slim.
Primary gain should be quieter highway cruise, and better ability to take advantage of aero mods.
If I drove pure highway, I'd just go with a taller 5th, but the car gets about 50% of miles under 50 mph, and also tows frequently, so a big jump from 4th to 5th was out.
Planning to take possession tomorrow (just getting back from supercar nationals today) then I'll need to round up stretch bolts, seals, and fluid before install. I have to replace the overdue timing belt first though. . . . .
Edit: If 6th reduces mileage, I'll just use 5th which is very nearly identical to my current 5th.