Pro Tip : Closed Loop vs Open Loop Tuning 

I have the power vision with wide band and can see it making adjustments from the lambda tables in real time. It's really cool and keeps my bike running the way I have it setup no matter the conditions. 😋

Good Info. I'm running flashed ECU Power Commander V with AutoTune 300 with wide band O2's. Bike runs a lot smoother, not as hot and better throttle response

Great explanation, makes me glad I picked the set up I did

Great presentation!! Thank you. I've been trying to understand the differences between Closed/Open Loop variables for some time now. I am using Woolich Racing Software. My narrowband 02 is disconnected, removed, and disabled in the software. I am using a wideband 02 in open loop and my tune is nearly perfected for my area (4,640 feet elevation). That being said, are you stating that with an open loop system, one would be required to make adjustments to a custom tune in open loop given significant changes in elevation? Such as, I am tuned for 4,640 feet elevation. However, our Density Altitude is seeing peaks of 7,500. Running rich is not as bad as running lean. *To an extent. So my question to you, is there a general "rule of thumb" for every 1000 foot change in elevation? Such as, +/-1%, 2%, or 3%? Knowing Air Density with 0% Density Altitude at Sea Level is 0.0764 lb/ft3 Air Density. Air Density where I am now is 0.0667 lb/ft3. Is it as simple as 0.0667 > 0.0764 = 14.54% more fuel to compensate for the greater density of oxygen at sea level? I did my math from 0 feet elevation to 8,000 feet. Every 1000 foot change is +/- 3% Air Density. I know when I went to Florida, my bike was backfiring like crazy. More oxygen, no compensation of fuel = lean conditions. I had to add almost 14% more fuel before the backfiring ceased. Thoughts?

Thanks for making things clear. I have two questions: (1) I purchased my 2020 XL883N second handed and the previous owner installed and set up Thundermax. I assume the settings are correct for the time being. Do I need to go back to the store and tune Thundermax again after 2 years of riding? So far, I have no complains about how my 883 runs. (2) My traveling milage reading is always shorter than it actually is (I compare the mileage reading with my 883 friend moving the same route with me. I am 10 miles short out of every 100 miles tire consistently). Does it have anything to do with the speedo cal in the settings? Or, it has to do with ABS speed sensor? Again, thank you for all the videos you have made. It helps a lot.

Great video! One of the best general explanations I’ve seen. I have a Buell that seems to be running a little lean. I have not verified yet whether or not the ECM was adjusted properly whenever the original owner put a jardine exhaust and deleted the Interactive exhaust device. I am fixing to add a new map tonight abc we will see. It appears that the open/closed loop argument is akin to Chevrolet/Ford, Honda/Suzuki, potato/potato.. wait, anyway, I have started leaning toward open loop with a barometric sensor because I am around 300-800 feet elevation abs I appear to be having some lean running tendencies, warmer operating temps, a little cracking and popping from the bike/intake. Any thoughts as to where I am? Open loop good, ok to try? Maybe get a wide band O2?

Hi. What loop system does the 2016 sportster 48 have ?

Hello Are you aware what loop system does KTM 390 Adventure have? If it's open + closed, then when does it switch into closed?

Wonder why Harley’s from the factory don’t come standard with the wide band o2 sensors?