I do not know where I would be without this site. Alright I have had my edge running on level two with a few tweaked settings for about a year now and I drove a buddy's truck the other day and I think there may be something wrong with mine. I have a 5.4l with a 3 in. K&N and my edge is set to level 2. I live in Gainesville, FL if you needed to know the weather conditions and elevation. I run 87 and 89 octane. Probably about 2 tanks of 87 and 89 each month because I have the 40 gallon tank. I don't know if my program is garbage or I have done something to my truck but I need to get it fixed. Could it be a timing problem, running lean I have no idea I am just throwing out what I have read on the forum.

 

why do you think something is wrong?

 

Well he has the same truck as me except he doesn't have a K&N and his truck seems much more powerful.

 

Well, its hard to say with out driving both first hand.

First of all K&N air filter does nothing for performance. So, there shouldn't be a difference there.

Secondly, isn't the level two tune for towing ? Means longer revs at different gears (before shifting) ? I am no expert on the Edge, but was under the impression that was mainly what they did on their tow tune. Allow longer rev, and firmer shift.

Lastly, you can't use your butt dyno to accurately tell the difference between trucks. Far too many variables. His truck may act different, because its a different truck.

 

Just to clarify, are you sure his truck the "same" as yours?
year? cab? gears? engine? bed length? exhaust?
and is the K&N your refering to a drop in filter or intake.
maybe he has tweaked his edge a little?
I have to agree with Merc. tech that most butt dynos aren't accurate!
Although I'm guilty of using them all the time!

 

He has everything the same as me 4x4, supercrew, gears all that just the color is different. I was just thinking I'm running a little lean or something and wanted some suggestions in fixing the problem. I've read on here that you could be running lean and not even know it.

 

Put the stock intake back on and see what happens. The only way you will know for sure if you are lean or not is a dyno. One other thing, if you are running the 89 octane without bumping the timing on an 87 tune, you are wasting money and may be adding carbon to the cylinders.

 

The newer truck have a knock sensor and lean sensors. You'll get a CEL if your running lean on a 04+

I agree with the last part and wasting money, but how would it be building up carbon ?

 

What the hell is a lean sensor?

Less spark + Slower burn rates = Not enough spark to completely burn fuel.

On another note: What does your dealership do about 93 octane required, lol...

 

trying to use "lamens terms" Sorry.

By lean sensor, I simply meant all the sensors working in conjunction with eachother to inform the Computer your running lean. The head temp sensor, all the O2 sensors, MAF sensor, etc etc etc.

I still don't think your going to have a carbon build up problem from running too high of octane.

Ya, those cars sure are nice. The ones shipped out here are tuned differently. They require 91 octane gas. Customers still complain about having to use premium... even after buying a $130k car.... frickin yuppies !

 

Only the HO2S sensors monitor air/fuel.

 

yes, but air/fuel isn't the only thing monitored to determine a lean condition. Running lean heats everything up. Air pressure, density, and heat all help the computer determine your running lean vs. a bad 02 sensor or other problem going on. Whats the comp has determined a lean condition, its trips a CEL for further inspection.

 

The ONLY sensor used in connection to a lean/rich mixture is the status of the fuel rail pressure. The monitor runs continuous in closed loop. After STFT or LTFT threshold limits are met for more than two seconds and occurs in TWO drive cycles then it will trigger a MIL.

 

No **** ? Learn something new everyday huh ? Thanks asshat

Well, in Mercedes, they don't use any fuel pressure sensors, they use a group of sensors for the computer to determine a lean condition.

 

now that's funny **** mercedes techguess you can say if the hat fits -wear it-lol