Hey guys, I am going to be testing out one of those fuel saver devices from a sponsor over at GMFullsize.com and I wanted to see what you though would be the best way to do it. I got the custom MPG PID set up and I have been scanning with it, and I made a table of VSS vs DYNAIR g/cyl, and another of RPM vs DYNAIR. Do you think that driving around and filling in these tables before and after will give me a good idea of whether or not the fuel economy has increased? I was thinking that I can do a before and after table and copy them into Excel and calculate the differences across the whole table. I figure this removes driving style from the equation.
Here is the thread, in case anyone cares to dig through all 6 pages of arguments:
http://www.gmfullsize.com/forum/showthread.php?t=54038
I don't care about how many miles per tank of gas I get, that is subjective and changes with driving style. I am trying to remove driving style from the equation all together, and get down to how much fuel is consumed based on varying engine loads.
I am somewhat skeptical of this thing (although I do hope that it really works), and I know others are, so please keep personal opinions about the product itself out of the thread and let's concentrate on how best to test it. Do these tables sound like they will work ok? Should I be using MAP pressure instead? Thoughts on different testing parameters?