Not sure the speed, I normally upshift between 3-4k rpm, under normal driving, and shift to 6th at ~65-70 in hwy driving. During a recent trip to Mojave I yielded 19mpg, which was better than I expected.
I got 21 mpg coming from mojave to phoenix, at an average speed of 85-90mph, with multiple hard pulls. I couldn't believe the mileage. Thats with a Torrie Mcphail tune btw.
Not sure the speed, I normally upshift between 3-4k rpm, under normal driving, and shift to 6th at ~65-70 in hwy driving. During a recent trip to Mojave I yielded 19mpg, which was better than I expected.