I have been running them all this time. They do help with gas mileage and downforce. I noticed the front helps a lot going up gravel driveways. It works as a skid plate.
All aftermarket company's make them for looks. They don't go under the car like the one I made. If you want looks the bojix is nice. If you want improvements the one I made is for you.
I'd have to show off more than the tip if I spend $500 on a system but cutting around the exhaust would probably eliminate the 1mpg increase one might see and I'm never going to win a MPG battle so it would be mostly a "looks" mod since it does really clean the rear up nice as an alternative to a diffuser.
Just returned from a trip (Tulsa,OK) and noticed on a few '12 Focus' we passed that the bottom center of the rear bumper cover (black part between reflectors) will buffet at speed (75mph+). This would seem to indicate some air is getting trapped in front of the rear bumper or isn't flowing smoothly around the 'lunchbox'.
You guys must have Focuses all over the place since I've seen 7 around here in the first month and I was never behind one much less having seen any on the highway.
I made a thread looking for other Denver focus nuts and I got one reply from a guy with a first gen and that was it so it's good and bad.
If I drive good the mpg are above 40. But it's so hard not to beat on her. I average over 35mpg driving hard all the time. Pics of the front will be hopefully this weekend. I finally found a lift that I can use. Gotta change the oil as well.
Like I said before. I moved to a different state and the guy who makes them is in NC. I don't have the tools. If I can find a plasma cutter I will see what I can do.
Maybe, but I was also debating a bike rack hitch because I don't want to have to throw a bike on the top of my car. Or I could get one of those racks that you strap to the car... we'll see.
2012-Focus. So I noticed you have your car lowered. Eibach claims something like a 13% gain in fuel efficiency with their newer springs. So I'm curious on how much your lower car is effecting the good MPG #s more than what a stock height car would with your new diffuser attatched? Did you notice improved MPG's after you lowered your car and then again better mpg's after the install?
That also looks like a lot less aluminum, which isn't cheap.
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