Hermsters,
I decided to try some VGs on my Jetta.
http://ecomodder.com/forum/showthrea...rear-8839.html
No definitive mpg improvement, but a major fuel change impaired any possibility of a good comparison.
Also recently added a mediocre rear diffuser. This made a more noticeable improvement, vs the parachute stock rear bumper lip.
http://ecomodder.com/forum/118456-post34.html