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Front Underbody spoiler

7K views 12 replies 5 participants last post by  Cobb 
#1 ·
Has anybody purchased the front underbody spoiler and do you know if it increased your gas mileage? If it did, how much did it increase it buy and is it worth the purchase?

Thanks
 
#5 ·
Anything to reduce airflow under and through the car will help mpg. I think someone has the full mugen kit and said he got 4-5mpg increase.

Myself, I am going to use the rain gutter method. Take a rain gutter, slip it so you have 2 L shapes. Then mount it on the underside of the bumper to deflect air to the left and right from the front like the splats try to do.
 
#13 ·
No one? I bought some rain gutters to slit to make L shaped wind deflectors to mount on the front in a V shape and along the sides to further lessen the gap between the car and ground.

I should paint them, but I am sure they will end up along the side of i95, 288 or chipenham pkwy. :) Maybe I wll be proven wrong?
 

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