Follow the below and report back. I could type all day on this one subject as I do not know what you or others know. Using Auto Tune is a Art. Takes Time, Not plug and play as you will learn. All your questions help me understand so keep asking.
Hey guys, brought this over from the turbo thread as it Relates. May Help some of you decide. Cheerssaid not to use auto-tune on a turbo bike...its a big no-no? I just assumed trying to use an auto-tune to tune something as fast changing as afr's on a turbo bike would be trouble, so I never even considered it.
Here is my thoughts on this, people believe Auto Tune is plug and play and it most certainly is not. That's where the trouble comes in. From all accounts if jlewis can get my AFR table to Repair his map then the map becomes his own made by him, at his sea level, for his set up, on his bike. What could be better ?
Ok, next the 02 sensor,,,, is it different than the ones on the Dyno ? Software from the Dyno's computer, is it different ?
So, now comes down to the tuner or user with little or no experience with his new toys. Danger zone. From what I can see 4 sure is the RPM climbs to fast for the Bosch sensor to see the readings it's looking for. This becomes clear in the recommended trim values. It's Blind. ZERO is Blind.
On the Dyno, the operator goes to 4th gear and holds it to wide open throttle. This slows down the RPM climbing rate & allows the 02 sensor to get good readings as he performs multiple runs to confirm the different throttle positions.
OK, in comes Auto -Tune, what we do on the street is gas on gas off at all TPS positions. Then go in and except Trims,,,,Now your Map is Junk. Look yourself at the green TPS highlighted block in the software as it moves across the board,,,, Mapping like this will give bad results.
If you go to wide open throttle then to 80% 60 % 40 % to all TPS positions in a taller gear this will slow down your RPM climb rate and you can open the Eyes of the sensor.
But, if you touch the throttle just once on the RPM wind down the readings you have just made will be changed and all you have just made is lost. Make sense ? I have hundreds of tests to prove.
So who goes from wide open to zero ????? No One, so the maps made are crap. IMO, I would take a Dyno proven map any day. But if you use Auto Tune exactly as a Dyno Operator does, Results are Nice. Proof = My AFR Gauge matches my Auto Tune trim #'s. I have found a way to make it work, this means anyone can,,,, baby steps think and study.
This is how I'm doing it. Please add to thread if anyone has more to offer. I'm only trying to help, no flaming please lol.
Romans thanks for the explanation on the auto-tune...makes perfect sense