I making the big step into timing with my Edge Evo (I use level 3) and the manual prescribes that it is safe to adjust the timing + 0.50 for every + 1 octane; I run 93 octane so I raised the timing 1.00 (even though the manual specifically says it is safe to move the timing a total of 1.50 for 93 octane on Level 3).

1. How will this effect Milage?
2. How does timing effect Performance?
3. Is it hurting or helping the engine?

I'm leaving for Michigan for the weekend tomorrow so I'm also curious what you guys would recomend setting the tuner at for roadtrips?

 

Im wondering the same thing! I might go with 93 and leave it on level 3. Anybody else doing this on a daily driver?

 

Don't quote me on this cause I may be wrong, but
I think bumping up the timing causes the fuel to burn quicker generating more power, and that upping the timing can lower exhaust gas temps.

 

Did Edge finally get around to updating the manual? I just looked at the one on the website and it is still the old version with the "Fuel Octane" setting instead of teh "Timing" setting. Anyway.......I was just curious.....here is octane info that Bill (Edge tech guru) posted a while back:

"Roughly 1 degree per 2 octane.

Level 3 (basically 91 octane tune) running 93 = +1 deg.
Level 2 (basically 87 octane tune) running 93 = +3 deg.

Level 3 running 100/101 = +5 deg. (This is for the rich guys!)

These are ideal values at sea level. At altitude, you should be able to add another degree per 2500 ft.

5000 ft. = +2 deg."

I run level 3 for my daily driver. I use 93octane and I am at 1200ft above sea level. I have my timing set at 1.5. That alone knocked a couple tenths off my 0-60 and gave me about 1 more mpg. I've been running it like this for about 6-8 months.

 

Good data guys.

I've always used 93 Octane for 2 reasons 1. It's my undertanding that it's a cleaner fuel so it helps keep the fuel system clean and 2. The difference in price for a 20 gallon fill-up is like 3 or 4 bucks!

Now that I've got this down; it is true what they said about tire size, it was definately incorrect and is simple to correct. But now how do I find out if I have the 3.55 or 3.73 gears? Is there a code in the VIN or something?

 

Easiest way is to get under your truck look at the rear diff and look for a stamped tag, something like 3L55=3.55 or 37L3=3.73. Hope that helps

 

i use level three with no adjustment to timing and run 93 i might have to try bumping the timing to see if it makes a difference.

 

I used 93 on lvl3 without bumping the timing also. The power was nice so I left it. Does it make that much of a difference?

 

I would do a bump of +1 at least, and would try +1.5 to see if it pings. If it pings, back off to +1. yes, it makes a lot of difference. makes it more efficient as well.

 

I have a somewhat related question.
I've only tried level 3 on the Edge once because the only 93 octane I've been able to find here is 10% ethanol and the gas milage was crap compared to 87/89. Why is this? There were a few WOT runs but not more than usual

 

I have no idea. We have been 10% ethanol as well. I get enough better on the 93 octane to more than pay for the 20 cents a gallon difference. Right now, I am running level 2 with the same settings I was using on level 3. The biggest difference is there is a little more low end torque on take offs where level 3 gave me a little more power on the top end at higher rpms. It is a different power band. Where i really notice the advantage of level 3 is when I need to pass in a hurry, running about 65 and hit it. It is much more responsive than on level 2, at those speeds.

 

i run level three and bumped mine 1.5 and noticed no real difference. and there is no hint of pinging. it does however cost some mpg as i stay in the gas more to see if it made a difference LOL. I honestly did not really notice much of a difference between level 2 and 3.

 

Is all your gas 10% ethanol or just 93 octane?

The thing is, I get better milage with regular 87/9 then with the more expensive 10% ethonal 93 so it doesn't make up for it, it actually seems like a waste. Even though the difference to fill my 135L tank from bone dry to full is something like $12 (last time I checked anyways) add on minus 1-2 (or whatever it was, i can't remember) MPG and it just seems like a waste. I usually just put around town anyways so a stronger bottom end is best for me. Just curious why the ethonal blend give worse milage. I remember someone else here saying it does as well.

 

Yes, all grades here are 10% during the summer months, not sure if they are switching back now or not. But, yes, ethanol does not burn as efficiently so you do not get as good a mpg out of the blend. Even worse on the Flexfuel, which is 85% ethanol. Sounds as if you are correct in saying the level 2 is best for your needs. It is best for mine as well when driving around the city and on my 25 mile commute. When I hit the highway, especially the 2 lanes, the level 3 is better.

 

When I go back to lvl3 Im going to try that. Thanks.