Can't speak to the noise portion, but here's a good article on the mileage
question.
http://mars.acnet.wnec.edu/~ehaffner/did.htm
Bruce B wrote:
> Hey guy's,
>
> Let's talk about hard covers and shells. The adviser at the dealership
> warned me that some DAK owners have complained about bad noises coming
> from the rear end when you add a shell. He said it's creates a condition
> where the harmonics from the rear end resonate through the cab "CC" at
> speeds around 50-60 MPH.
>
> Anyone experience this???
>
> Also looking to hear first had 2 things
>
> 1. How did a cab height shell effect gas mileage? And power "4.7L"
> 2.How much does a cover help mileage?
>
> I hull music gear so I need security and if I can get better mileage out
> of
> the deal too I might as well go for it. But I think cover will not be
> tall enough for my needs.
>
>
>
-- -andy andylevy@yahoo.com Maintainer, DML FAQ - http://www.dakota-truck.net/faq/ http://home.twcny.rr.com/andylevy/dakota/ '99 CC 4x4 318 auto
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