Power Vision Information Thread
Stellar HDF Member
Joined: Mar 2009
Posts: 2,454
Likes: 58
From: Graysville, AL
No, I have not adjusted spark. The tune started out as the FuelMoto tune for their 2-1 exhaust and woods tw-222 cams setup. I am learning one area of the PV at a time. First VE's, now AFR and next spark.
Stellar HDF Member
Joined: Mar 2009
Posts: 2,454
Likes: 58
From: Graysville, AL
I am looking for better performance and cooling. I couldn't care less about a few MPG. I will look at the MPG next time I take the bike out (hopefully today). We have flash flood warnings here in AL.
Road Master
Joined: Jul 2012
Posts: 876
Likes: 65
From: CT
Ok I'll look into the quick tune. My question is do I add 2 to the number or take 2 away from the number to add 2* of timing?
Cruiser
Joined: Nov 2010
Posts: 124
Likes: 0
From: Morganton, NC
Add to the number...the higher the number, greater the advance.
Road Captain
Joined: Nov 2012
Posts: 569
Likes: 0
From: USA
I checked my plugs today after 100 miles of running the 13.9 AFR.
The plug on the right is the rear cylinder and the left is the front cylinder. They look pretty good to me.
I decided to try the AFR at 13.8. I took the bike out for about 20 miles today and it seems to really like the AFR at 13.8. I'm gonna re check the plugs after a 100 miles or so just to make sure it's not to much fuel.
The plug on the right is the rear cylinder and the left is the front cylinder. They look pretty good to me.
I decided to try the AFR at 13.8. I took the bike out for about 20 miles today and it seems to really like the AFR at 13.8. I'm gonna re check the plugs after a 100 miles or so just to make sure it's not to much fuel.
Road Captain
Joined: Nov 2012
Posts: 569
Likes: 0
From: USA
13.5 on the freeway would be a waste of gas. 14.2 is plenty for a steady cruise mode at freeway speeds.
Banned
Joined: Nov 2011
Posts: 134
Likes: 2
From: Gainesville, Fl
I was wondering if, (assuming VE's are <5%) running open loop all the time is in any way detrimental to a modern 103 motor. Nothing outrageous, just like 14.2 in the cruise. Would this screw me down the road with carbon build up?
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Road Captain
Joined: Nov 2012
Posts: 569
Likes: 0
From: USA
I checked my plugs today after 100 miles of running the 13.9 AFR.
The plug on the right is the rear cylinder and the left is the front cylinder. They look pretty good to me.
I decided to try the AFR at 13.8. I took the bike out for about 20 miles today and it seems to really like the AFR at 13.8. I'm gonna re check the plugs after a 100 miles or so just to make sure it's not to much fuel.
The plug on the right is the rear cylinder and the left is the front cylinder. They look pretty good to me.
I decided to try the AFR at 13.8. I took the bike out for about 20 miles today and it seems to really like the AFR at 13.8. I'm gonna re check the plugs after a 100 miles or so just to make sure it's not to much fuel.
One thing to remember is 13.8 may feel great on one bike and make another bike a little on the soft side. Richer isn't always better. Each bike, depending on the build, will have it's own happy spot. So, if someone says they run 13.8 and his bike runs great it doesn't mean every bike will run great at 13.8. I find 14.2 to be a pretty decent compromise for MPG and overall driveability. But, that might not be the "just right" AFR for another bike. Running 13.8, especially in the low load / low RPM / cruise areas, won't get you much. It won't hurt anything, but I don't think you'll gain anything either.
In the end all that matters is if you're happy with the way it performs. Try out different combinations and eventually you'll find the right one for your bike and riding style.
Road Captain
Joined: Nov 2012
Posts: 569
Likes: 0
From: USA
If your bike is non-cat 14.2 will be more than fine for a long long time.
If it's a cat bike your converter might not like you, or not last as long. They don't like being always rich or always lean, away from stoich. That's just one of the reasons the 02's switch between rich and lean constantly. If you go open loop 100% you'll be negating that part of the systems equation. I'm not sure if 14.2 would be enough to cause a converter to act up though, so that ones up to a cat-bike owner to research. Maybe someone with more knowledge of the tolerances of converters can chime in, for those with cats.