The facts:

I built my first unit, and installed it in a 1989 Chevy P.U. with a 350 CID engine, 4 bbl carb., auto transmission W/cruise control (not used during tests), crew cab and heavy camper shell.

Prior to installing the unit, I made 2 fifty mile runs (hiway) to establish a (hopefully) firm baseline mileage. I recorded an average of 15.02 mpg.

I then installed the unit, with 1 vacuum line, tee'd in just in front of the pcv valve. (Keep in mind, the owner and I were so anxious to test this out, [and I was still learning how to "navigate" the W4G site] that this was all that I did. Oxy/map sensors be damned, full speed ahead!!]) Frankly, about the only thing I did read, prior to the tests, was the safety instructions.

I then made a run over the same course, (50 mile), and found that I had gained approx. 19% in mpg. Not much, but enough to convince me that this technology is viable. And at 71 years of age, if I can do it, anyone should be able to do it.

Anyway, we were so elated that I installed two more units. Oh, I should mention, these were installed in the "old way", i.e., hoses from one unit to the next. Also wired the "old way". (I hadn't got to "What's new", yet).

So, still using the original baseline, (15.02 mpg), we drove the 50 mile course again, refilled, then calculated the current mpg. (Are you ready for this??) we went from 15.02 mpg to 29.274 mpg!  An increase of over 98% mpg.

Now, we come to the downside of my newly aquirred "bi-polarism". At approximately 1/4 tank of gas, the computer "took over", and we're back to square one. (15.02 to 15.1 mpg).

Now,that I've read all of the new developments and suggestions, I will not rest untill I've regained the original increase in mpg.

Of course, it goes without saying, if anyone has any helpful suggestions, they would be most welcome.

In the meantime, I'll keep you posted on any new developments from this end.

Robt. Walking Eagle (Rev.)

Walking Eagle, Last of the Visionaries

Bakersfield, CA

Jon, thanks for the advice. Unfortunately, I'm installing this for a friend. I will show him what you suggest. Who knows? Perhaps he might think it's a great idea. Personally, if it were up to me, I would take your advice. Thanks again.

Walking Eagle, Last of the Visionaries

Bakersfield, CA

Now, that's what we all need to see....incouragment!! I'll also show this to my friend, as he just ordered a map enhanser but is worried that he might have wasted his money. Frankly, the last 2 days have worn me out, just trying to cheer him up.

Walking Eagle, Last of the Visionaries

Bakersfield, CA

Phil 

Phil or Flip