All right, so you were just telling me from experience, not ripping me…..fair enough

I have absolutely no idea what you just said there, you lost me when you said TBI engine <img src="/forums/images/graemlins/confused.gif" alt="" />. I can understand your skepticism, especially considering your background.

I have an automatic 1994 Saturn SL1. The driving is a mix of city (<45 mph), highway (45-60), and interstate (>60) miles, with more city and highway miles than interstate. The actual Excel spreadsheet I used to calculate this is on a fried computer in the closet, but I remember whenever I did calculate it I got just over 1.25 extra mpg. So I went from around 33 mpg to at least 34 mpg (again, I can’t recall exact figures; this was a few years ago and the actual receipts are long gone…I did it for about 8 months after I got the device to compare to prior fuel economy, and calculated it would take about a year to pay for itself). So using 1.25 and 33 mpg, that equates to a 3.8% improvement. You were curious as to the engine type……http://en.wikipedia.org/wiki/Saturn_S-Series says I have a SOHC 1.9 L I4 LK0 engine; whatever that means to you.

And like sarbar, I too have to get an emission test. I live in a certain 26 (I think) county area of metro-Atlanta that you have to get an emission test every year, and I’ve always come out with flying colors, so this isn’t just some old junker (well, maybe it is, but it is my old junker).

Pika: There are probably a lot of variables I wouldn’t think of that affects the gas mileage, but I know that my driving habits will change the fuel economy the most. I could easily bias what I am saying one way or the other (whichever way I choose), but all I can say to this is that my driving habits have not changed.


P.S. Have you seen this http://www.youtube.com/watch?v=QmqpGZv0YT4 and what do you think of that?