Logs and Virtual Dyno, am I runing lean?

[masual]

Logs and Virtual Dyno, am I running lean?

Hello guys. I've been reading the forum for a while. Here I learnt about datazap and Virtual Dyno. I ran a few logs, and comparing them to the ones other users uploaded, it seem I'm running lean.

My car is a Focus Ecoboost 1.6, 150cv. It has been tuned. The tunner just ran a few logs with me, read the map and modified it. After flashing we just run another log and he said everything was ok...

The VD

And the datazap logs:

http://datazap.me/u/masual/2016-01-30?log=0&data=1

I only read those pids because I'm using an OBD2 Bluetooth adapter, and it is very slow. If I read more PIDs the loging intervals are too long.


Thank you in advance.

 

[commonplatypus]

This looks lean to me. You don't really want to be exceeding 12.2 AFR when going WOT.

 

[masual]

Thank you commonplatypus. So what should I do? It is dangerous or bad to run that lean?

 

[commonplatypus]

Thank you commonplatypus. So what should I do? It is dangerous or bad to run that lean?

Have the tuner fix it or switch tuners. I don't know how long the car can run that lean as I have never had this issue before, but I've heard of people leaning out and it isn't pretty. It will cause knock and detonation in the cylinder(s), which will lead to the engine blowing at some point.

Here's a tidbit I pulled from another forum:

"For combustion to occur, two things must be present- oxygen and fuel. Ideally, there will be just enough air and fuel to burn and no more of either. Extra fuel without extra air will not burn. However if there is too much oxygen, and the temperatures get hot enough, the metal in the engine will act as fuel. Metal will burn, literally. Watch someone cut metal with an acetylene torch. First, the acetylene flame gets the metal very hot, then pure oxygen is supplied and the metal literally burns away. That is what can happen with a lean (too much oxygen, not enough fuel) engine condition. Burned pistons and valves are often just what the name implies. Hope that helps."

 

[masual]

Thank you very much again. I'll let my tuner know that I think I'm running too lean. I will update with his response.

 

[Hijinx]

I would find a new tuner as soon as possible.

 

[masual]

I would find a new tuner as soon as possible.

Thank you very much for your comments.

Is it that bad? I mean, I don't think he had leaned out the tune. Maybe he didn't touch the AFR map, so in the worst case I'm running stock AFR. I've been looking at the commanded vs actual AFR and they seem to match up. It wasn't a cheap tune, I will try to talk to him first before looking for another tuner.

 

[Hijinx]

Thank you very much for your comments.

Is it that bad? I mean, I don't think he had leaned out the tune. Maybe he didn't touch the AFR map, so in the worst case I'm running stock AFR. I've been looking at the commanded vs actual AFR and they seem to match up. It wasn't a cheap tune, I will try to talk to him first before looking for another tuner.

What worries me is that your boost and AFR are all over the place.

 

[commonplatypus]

What kind of mods are you running?

 

[masual]

Right now, that can affect the engine, only a K&N 57S-4000 drop in filter. I have an Airtec Intercooler on the way. I also have installed a Mishimoto OCC, stiffer Rear Motor Mount, Bilstein B12, upgradaded brake pads and fluid.

 

[commonplatypus]

Flash a Cobb Stage 1 OTS map with the appropriate octane you run in the car (Move up to Stage 2 OTS once you have the intercooler) until you get the car re-tuned properly. You can download them from Cobb's website for free. I was mostly seeing if you were running any weird off-the-cuff mods that might prevent you from doing so. I wouldn't run your current tune for extended periods of time.

 

[masual]

Flash a Cobb Stage 1 OTS map with the appropriate octane you run in the car (Move up to Stage 2 OTS once you have the intercooler) until you get the car re-tuned properly. You can download them from Cobb's website for free. I was mostly seeing if you were running any weird off-the-cuff mods that might prevent you from doing so. I wouldn't run your current tune for extended periods of time.

The problem is, my car is not a Ford Fiesta, is an European Ford Focus with the same engine than the Fiesta ST... I think maps are not compatible, and I don't have any tool to flash it.

 

[commonplatypus]

I totally overlooked that part. Sorry.