[aerohead]

Originally Posted by doomz78

my tires are at 51psi. The max sidewall is rated at 51psi. so yes max. I have an upper and lower grill block. I have a hole maybe the size of a softball on the lower grille. I drove 220km today and the engine was getting a bit hot. 225 was the max it hit on the scangauge2.

And the license plate would make a bit of drag on the car. Now that its off the nose of the car is cleaner. I guess you could compare the license plate to a mini snow plow. After a while, if you want MPG increases i believe that you have to start splitting a few hairs. So That is what I'm doing.

Again my car has,... Scangauge2, max psi, mud flap and side mirror delete, 95% grill block, No A/C or windows when possible, And im a big engine off coaster whenever i can.. I just rolled passed 900km (559 miles) on this tank and i still have 1/4 fuel left. Factory miles per tank rating on the altima is 413 miles per tank. So im doing something right apparently. i will try and hit 700 miles on this tank

I will seal the gaps on my car with silicone.. headlights, hood gaps. eg f I gain another 10 miles per tank by doing this .. great. It costs me almost nothing to do. And my rims are the steel rims with hubcaps on them. I was thinking of removing the hubcaps cause the steel rim is smoother and more aerodynamic. and i would also shed a few pounds with the hubcaps off. Maybe 3 -5 lbs.

doom,you might want to check out the sticky on mods data here on the front page.
There's some info on wheel drag you should know about.