The first modification that I want to do to my mark is gears, I cant decide what the best ratio would be for my car because I drive about 15 miles to school every day, half of my driving on the highway the other half in town. I have old wheels that I am going to be putting slicks on for better traction with my new gears. I want to make my car better at the track but also have it still get about 17+mpg. Could I get away with anything steeper than a 3.73? possibly a 4.10.

4.30's all the way. With a properly tuned up engine you can get up to 25mpg on the freeway with 4.30's as long as you don't go 75-80mph. In the city gas mileage should be about the same as stock gears because you will need to use less throttle to get moving.

if you want to spray i would go with 373s but, thats my 2 cents

If you want to keep some semblance of fuel economy on the highway... If the highways you generally travel on move at a 60-70mph pace, 4.10s or 4.30. If they move at 75-90 like here, 3.73s or even 3.55s.

i was gonna go 4.10s (have a set sitting here) but decided on 3.55s since im going turbo/6 speed.

so what is the best for a beginner starting to modify the engine and trans but will be racing on the wekkends?

so what is the best for a beginner starting to modify the engine and trans but will be racing on the wekkends?



intake, j-mod, stickier tires, 4.10s, exhaust.