HI guys

How you doing, well I went to the dealer today to place an order in my 05. I add every thing except the aerodynamic underbody. He told me that it's very important when you speed up its keep car go smoothly.

My Question it's important to add this package?

 

I wouldn't say it's important as far as safety on the public road. It may make it more efficient aerodynamically by .01-.02 or so....
Think of it like this, if it was soooooo important, it wouldn't be an option. They are just trying to make more money.

 

so i don't need to add this package..!!

Thanks SloG35

 

It becomes more important the faster your speed, as it smooths underbody airflow and allows it to exit faster: thus your car will feel more stable due to reduced lift.