[Quartz]

If I was that worried about my fuel economy, I wouldn't have bought a Titan in the first place. My bed cover is for keeping cargo dry and secure, and random jackasses from using the bed of my truck as a public dumpster when I'm parked at the store.

Perfect!

Same here, plus I like the look of a covered bed.

I have one on my T but I don't care for how it or any other cover looks.

I noticed no change in mileage since I put on my Extang Tri-fecta back in Dec of 09.

I have noticed no difference in mileage at all.