MPGs run, Aspire SE

[rmoltis]

I think the service is more geared for power than mpgs.

Making sure each cylinder is filled with exactly the same fuel and air mixture.

Not to mention after you install the adjustable fuel pressure regulator and turn it up a few lbs.
Your clean injectors will make a more atomized fuel spray as opposed to more of a squirt.

Balancing the forces created between each piston would help the engine run smoother.

The more balanced the forces the smoother the accelleration.

Less of one cylinder trying to compensate for the lack of energy created in the others.

That's just my opinion though.

[TominMO]

Here is some B3 Festy MPG testing data I extracted from an earlier post. These were short runs of about 86 miles, but you can see how consistent they are, with the only variable being vehicle speed (i.e. RPM and wind resistance factors). Stock B3 motor with 155/80x13 tires, and hatch spoiler.

....MPH......MPG
A. 60.........52.1
B. 55.........58.5
C. 45.........62.5

When I put an larger airdam on the front of my B6 Festy, mileage went up from 41.9 to 45.0 @ 60 MPH, a 7% improvement.

A 7% improvement via the airdam @ 60 MPH with the B3/skinny tires should give about 55.7 MPG. At 55 MPH you could expect perhaps 62.6 MPG, or perhaps a little less due to less air pressure. At 45 MPH I would expect little or no improvement, as aerodynamic factors become less important.

[TominMO]

I think the service is more geared for power than mpgs.

Having just made my own test, I have to agree. It's just that Matt had a customer report a 2-3 MPG improvement, which I was hoping for and would love to have seen--but didn't. If this customer is a board member, I hope he will do some actual rigorous testing and either confirm what he reported or disavow it, just so we have some valid input from him. But it's probably too late now, he has already altered the injectors, so we can't get a "before" test unless he installs some stock unimproved injectors.

[rmoltis]

Gotch'ya

[mikeyjd]

It seems that the only reason to see an increase from balanced injectors would be if there was something wrong with one of more of them. Obviously balancing them insures against problems there, but if you already had well balanced injectors you would have to expect no difference.

[Movin]

A reman injector is some new parts on a injector that will spray fuel with in manufacturers specs when done . Used injectors can fall anywhere. Matts injectors not only produce a finely atomized spray, they also pop at a very specific pressure and deliver matched volumes while doing so. Old stock can be close or horrible, its a crap shoot. To show a specific gain is impossible. To be as tight to specs as possible is what Matt delivers. Use his product for that purpose, not a specific gain.

[zoom zoom]

I wonder what would happen if you swapped in some low flow rate ev14 injectors, or something with better atomization charachteristics? You have an adjustable FPR, so surely you could use that to trim the fuel injection? You know that for a $7k car off the showroom floor nobody put a whole lot of thought into the best atomization of petrol.

[TominMO]

I wonder what would happen if you swapped in some low flow rate ev14 injectors, or something with better atomization charachteristics? You have an adjustable FPR, so surely you could use that to trim the fuel injection? You know that for a $7k car off the showroom floor nobody put a whole lot of thought into the best atomization of petrol.

Yeah, I'm wondering if dropping the fuel pressure to 32 will give better mileage, because of less fuel entering. Similar to putting a smaller main jet in a carb. This might be more feasible now that the injectors are going to output a clean spray pattern.

[mikeyjd]

Yeah, I'm wondering if dropping the fuel pressure to 32 will give better mileage, because of less fuel entering. Similar to putting a smaller main jet in a carb. This might be more feasible now that the injectors are going to output a clean spray pattern.

Don't get me wrong I don't think it was a waste of money just because you might not have seen results. I think "knowing" that your injectors are operating optimally is easily worth the price of getting them balanced. I'm betting the results will show up when the fpr is implemented

[Movin]

Forcing the computer to bounce rich seems to help mileage as opposed to bouncing rich-lean or always trying to lean the mix. All of that happens inside of the computers all is okay window. If you get to where you will do some good, you will get an occasional check engine light. Spacing the o2 out a half inch or so will nudge the mixture leaner without the computer knowing about it.

[mikeyjd]

Forcing the computer to bounce rich seems to help mileage as opposed to bouncing rich-lean or always trying to lean the mix. All of that happens inside of the computers all is okay window. If you get to where you will do some good, you will get an occasional check engine light. Spacing the o2 out a half inch or so will nudge the mixture leaner without the computer knowing about it.

can you post a picture or video on how you spaced your o2 sensor? I don't wouldn't want to ruin/hurt anything.

[FestYboy]

use of a anti-fowl spacer (for spark plugs) is the common way to do this.

[mikeyjd]

use of a anti-fowl spacer (for spark plugs) is the common way to do this.

So all it takes in an anti-fowl adapter to space between the manifold and the sensor? Do you have a picture by chance? I just want to make sure I'm getting the right visual here

[zoom zoom]

Whatever you do just be careful, id hate to see a blown head gasket or worse on that nice little aspire of yours. If you just turn down the pressure the o2 sensor would see the air/fuel mixture is off and it might try to compensate by overworking the injectors? Too lean and it could do damage? Install a wideband! It's probably more about peak HP from the engine, being effeciet as possible....not wasting fuel!! My 2 pennies anyway.

[Movin]

http://www.oreillyauto.com/site/c/search.oap?year=1982&make=Ford&model=F-150&vi=1121285&keyword=spark+plug+non-fouler

No worries, adjusting fuel pressure is far more extreme, this just helps keep the check engine light off and the computer working properly with a slightly leaner mixture.

The inside of the fowler will need to be drilled out for the o2 to fit. This exposes the tip to heavier gasses with less o2 .

Edit, note the part shown is for Berts old truck, 18mm
There are lots of smaller sizes. 18mm works.