Getting 63mpg, going 56mph in 43 degree weather

[Cobb]

Woohoo, grill block to the rescue. I was lucky to get 47mpg in this colder weather on the east coast. I taped over the lower grill with duct tape and got my supreme economy back with no issues of over heating. I do not recomend doing this if ac is being used.

It was easy to hit 63mpg and maintain it. Seems thats the max I could get was like 84mpg, but it kept going down. This is the same route I have made in other videos that feature the ac on and off and the tanabe nf lowering springs, so we are comparing apples to apples.

YouTube - 63g56t53

[RobertSmalls]

Congrats.

Grille blocks are effective across a large range of cars, and I've personally had success with my Subaru and my Insight-I. Factory grilles are usually sized to allow you to climb mountains in August, but unless you're doing that, you should reduce the aperature for better aerodynamics and heat retention. You can block a suprisingly large portion of the grille. Just keep an eye on the temperatures or the radiator fan. If the radiator fan comes on while you're cruising on flat ground, cut a little hole in your grille block.

Duct tape is easy, but I prefer to use black coroplast (or any other sheet of plastic), held on with zip-ties. I've also seen some very attractive clear plastic grille blocks.