Pro Guard

[Marauder_Santa]

With a large group just getting the pro guard on a group buy, I'm curious how much extra gas milage you will get out of the Pro Guard. I have one and believe it works - I had it installed by Dennis at his shop at the same time he tuned the car, so I really didn't have the chance to see how just the pro Guard effects gas milage. With the pro guard and his tune I increased my milage by about 3 miles to the gallon highway.

Cheers