I'm new to toyotas, new to forums and new to Marilin. My question is how much and what all does the computer in an 84 Carbed 22r control? The O2 sensor located under the drivers side seat isn't hooked up, but don't recieve a "check engine" message and engine seems to run fine except for some hesitation when the throttle is mashed. Also, I know isn't ideal, but will 33s and 4:10s work? Thanks for any help.