- August 28, 2013
- Reaction score
- Year, Model & Trim Level
- 2014 Explorer Sport
I believe we touched on this in another thread, but by what method are you determine A/F? My guess is an aftermarket data logger of some sort. The issue here lies in the fact that this is not something the computer calculates, so something is doing a conversion for you. Also, EcoBoost engines do not follow traditional wisdom, so you can not treat them like a regular engine. We do our best to provide the most power, while not negatively impacting durability. This is the problem with commercially available data logging, and the EXACT reason we do not recommend logging as most apps, software, and hardware is looking and calculating the wrong information. The PCM does NOT calculate A/F so you are reading inaccurate information. We had a customer come half way across the country to verify it was reading wrong. He was using the same data logging tools most people keep referring to. We simply don't command 10.2 :1 A/F.
To answer the reason to "why" on the 3-bar. The High Boost tune does play it close, mind you still on the safe side, of the limit on the factory MAP sensor, the 3-bar adds you some extra margin of safety. When you reach the limit of the sensor (which is 14.5038), it does not know how much boost above the limit you are at. So if it cant read above 14.5038, then whether you are at 14.5038 or at 30 looks exactly the same. The 3-bar corrects this potential issue.
As for inquiring on if we have a tune for the 3-bar. We actually have for well over a year, so that is something that we can compile quickly
I asked about the A/F before but it was never answered. As to how i am metering it, i have a wide band on the passenger side setup with a bung tapped. Maybe my wide band is faulty " you never know" or perhaps i have the bung too far forward or back in the stream.
Do you have an ideal location i should have it tapped? I can measure and make sure it's there or close to it. I can also borrow my buddies wide band to see if there is a problem with mine.
I wouldn't even ask but like i said the question was never answered before, speaking with Anthony he only said they are setup rich for safety but could not confirm nor deny the A/F being at a certain level as he was not sure.
Perhaps my measurements are off and i will certainly aim to get on the right track with them if that is the case.