http://www2.discountmbparts.com/part...+Saver&dp=true

I rember reading about a guy who fited something to get a better MPG.. I suppose it must of been this.. from what ive read it just slots into the Air intake!

or prehaps this one:
http://www.engineionizer.com/?gclid=...FQ9iMAodHCpbUg

http://www.wcpo.com/external/dwym/c3b519.html
heres what others with SUV's thought..