Quote from: FoMoCoSHO on October 01, 2016, 08:21:36 PM
@Zalvern- Sounds like you are monitoring raw sensor numbers which really don't tell you what is going on because they go through algorithms in the ECU which then are converted to knock retard (KR) which is the one you want to monitor.
I spent a while monitoring the raw numbers trying to figure out what they meant but there was no rhyme or reason to those numbers and what I saw KR wise. SHOdded finally came along and gave me a "scolding" and explained why I was just chasing my tail.
Hm, about that actually...
As I've come to interpret the Knock Sensor numbers (1 and 2): The Sensor numbers in healthy performance reading should maintain an equal rate of change if running both readings simultaneously. I've come to interpret those graphs as a pre-step measure to avoiding any serious knock issues. Don't worry about the numbers individually, rather you just want to seem them maintaining harmony between each other in terms of numerical rate of change (easier to read in graph form as both graphs should have identical patterns in healthy reading/no knock retard).
Better octane quality results in keeping both numerical knock sensor readings equal in the rate they change. If Knock Retard (which I am also monitor) is likely to reveal a bad reading, the Knock Sensor graphs when ran together (running only one is useless) will show them straying far apart in graph form. The two sensor numbers don't necessary need to equal each other, but rather what rates they're increasing and decreasing is the primary focus if analyzing them.
So the goal is to see both graphs increasing and decreasing in symmetrical fashion, or as close to it as possible. Better octane quality seems to help achieve this.
Quote from: AnotherGreenFusion on October 01, 2016, 11:17:36 PM
Spec sheet for the AWD fusion says 17.5 gallons so 2.916oz. I rounded up to 3oz when I started but did not realize I should put more than that in (dont recall brian mentioning it DOH!) I did however overfill the 1/2 oz portion of the bottle while filling so I likely have a bit more (I have not been super precise as I was thinking more would not hurt). I am about 1/2 way through the 38oz bottle between the fusions 3 tanks (2 real tanks IMO) and the fiesta. I also put 3oz in sthulins tank for him to try. I should have enough to get me to the end of the season if I deny more for the Fiesta. I just hope I can see numbers that make me feel comfortable with 100 octane.
My knock PIDs are disabled and always have been, I asked Unleashed to turn them on without luck, I will try again and ask livernois as well. For the time being I am watching global spark advance 1 and 2 as I do not have the per-cylinder PIDs the earlier years seem to have. Timing does seem a bit better but I still need to really pour into my logs. It does not help that temps dropped as they have in the last week, it makes it hard to tell if what i am seeing is boost season or the additive.
Ah ok, then in regards to 17.5 gallon tank, I would just put in 3 oz at the very start, so that is fine. A little extra isn't going to hurt anything, but it doesn't bring any further benefit either (so its just wasting extra fluid).
I didn't touch the 100 Octane tune until after passing about 4 complete full tanks just to give it some good time and adjustment. Strange though...you say all your Knock PIDs are disabled? Even when using a program like FORScan? Or is this with your SCT tuning device? I know I had them on my 2014 Fusion, but of course can't say for the 2015 since you state previous years having something yours does not.