Power Vision Information Thread
Tourer
Joined: Aug 2013
Posts: 379
Likes: 38
From: Nebraska
Did see that the message was stating open loop condition. Just did not expect them to be so frequent and close together. Bike was fully warmed up but was riding as I usually do. Cant say my acceleration and deceleration was slow and methodical. Will have to check the hit counts. It does occur more often under any load, even slight throttle increase. As an example, put the cruise on and its mostly steady in the flat but will start flashing the open at a very slight hill. The last run with the flashing screen showed deltas up to 11. They were at highest of 8 on the first run but that does not surprise me since I was not riding the same both times. Was running much more aggressive the second time. If the pv is still recording useful info while flashing, I'll just not worry about it and continue with the tuning. I was concerned mainly because I did not see this at all on the first run and it was so frequent on the next. Seemed like a shorted connection somewhere. Thanks for the help guys.
Road Master
Joined: Jun 2006
Posts: 871
Likes: 7
From: Manchester, NH
Did see that the message was stating open loop condition. Just did not expect them to be so frequent and close together. Bike was fully warmed up but was riding as I usually do. Cant say my acceleration and deceleration was slow and methodical. Will have to check the hit counts. It does occur more often under any load, even slight throttle increase. As an example, put the cruise on and its mostly steady in the flat but will start flashing the open at a very slight hill. The last run with the flashing screen showed deltas up to 11. They were at highest of 8 on the first run but that does not surprise me since I was not riding the same both times. Was running much more aggressive the second time. If the pv is still recording useful info while flashing, I'll just not worry about it and continue with the tuning. I was concerned mainly because I did not see this at all on the first run and it was so frequent on the next. Seemed like a shorted connection somewhere. Thanks for the help guys.
Road Master
Joined: Jun 2006
Posts: 871
Likes: 7
From: Manchester, NH
That all depends on your right hand. The way a bikes tune is set up will determine when it goes open or closed. Either way is not a bad thing. They are some areas that have to be richer, hence open loop. If you weren't autotuning you'd never know when it was switching. The ECM is running things the way you program it to.
4th Gear
Joined: Jun 2013
Posts: 8
Likes: 0
From: Italy
I need you help , I got an answer from Djnojet: "Adding a couple degrees of timing can reduce decel popping" I don't understand nothing about tuning and I would like to ask you where do I have to add degrees of timing? I'm not sure but I tought at Spark advance table (front/rear).
Road Master
Joined: Jun 2006
Posts: 871
Likes: 7
From: Manchester, NH
I need you help , I got an answer from Djnojet: "Adding a couple degrees of timing can reduce decel popping" I don't understand nothing about tuning and I would like to ask you where do I have to add degrees of timing? I'm not sure but I tought at Spark advance table (front/rear).
4th Gear
Joined: Jun 2013
Posts: 8
Likes: 0
From: Italy
Instead of playing with the spark advance tables, try removing 10% from the entire Decel Enleanment table. You'll find it in the Fuel section of PVWin when you load your tune. All this does is to add a bit of fuel when you suddenly decrease the throttle. It helps prevent the popping you hear. It's a much less drastic approach then playing with the timing and just might work for you.
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Road Master
Joined: Jul 2012
Posts: 876
Likes: 65
From: CT
So I did some data logging, then I used LT to calculate a tune. I got no knocks from the rear cylinder but some in the front. I'm not going to save and use these changes this time. I'm just trying to get a feel how good or bad my current tune is in respect to spark knock. The data was from a larger log, about an hour of riding and 3.6meg was the size of the file.
My question, is this a lot of spark knock? and any info to teach me how to read/interpret this info would be welcome!
My question, is this a lot of spark knock? and any info to teach me how to read/interpret this info would be welcome!
