Ecky, is that a momentary or a pop-up?
I'm switching mine to a momentary when I get the new shift knob since I don't really need the pop-up I have now. It's convenient in the fact that I just hit it and I don't have to hold it while the injectors die, but every once in a while I forget to pop it back up and I look like an idiot at the light when my car immediately stalls
I averaged over 80 mpg on the way home last night on the first day of this tank, so that's a positive sign!
Where did you go in through the firewall, btw? I just cut a small hole between the clutch and gas pedal on mine.