Nice to see another matrix/ vibe owner modding their car!
I have several nice write ups on what I did to make my car into a 40+ MPG car.
From our wiki (with my data):
side mirror delete -1.6 MPG for me:
Side mirrors - EcoModder
Grill block - upper .8 lower .5 MPG:
Grill block partial or full - EcoModder
Kammback-.8-1 MPG
Partial Kammback - EcoModder
Wheel covers (pizza pans) -1.5 MPG:
Smooth wheel covers - EcoModder
rear wheel skirts- .8 MPG:
Rear wheel skirts - EcoModder
Weather Spotter Rear wheel skirts - EcoModder
look through those links, lots of user data, all my builds, how to, etc. Whenever you see my user name that data should be right on for your car too!
I kill switch might be a nice mod:
Engine kill switch - EcoModder
My kill switch thread:
http://ecomodder.com/forum/showthrea...tml#post199155
If you really want to mod your car you should be able to pull 45+ mpg like I do most of the time. I got to 40 MPG just by driving alone, your auto should be good for 38 MPG or so.