Don't know about the other stuff but I do know that for the CLB table 500 is the middle value that means stoic will be maintained.

 

How do you know this?
Where is this value, or the range of values that pertain to a particular AFR documented?

It is not in the SEPST manual or the help files.

As I indicated in my post, the available range is 409 to 798. The manual only states that CLB will adjust by +/- 0.5%. The mid range value would be 604 not 500. I would then expect the midpoint value of 604 to correspond to 14.6. 500 should correspond to an AFR of 14.33.

 

http://tuneyourharley.com/biketech/c...p-fuel-mixture amongst other places.

In practice you don't want it working at as much as .8V. That won't give it any room for switching. An AFR of about 14.1/14.2 (~.75V) is about as rich as you want to be aiming for with the CLB values alone.

 

I'm wrong!!!

 

A quicky for you guys and them I'm gone for another year...

Using Gasoline with a Stoich of 1 Lambda CLBs are as follows:

801=14.22
798=14.25
794=14.3
789=14.36
785=14.4
778=14.45
768=14.5
758=14.55
746=14.59
580=14.65
450=14.68
385=14.69
255=14.72
135=14.78

Look at this a moment....
794= 14.3 and just 9mv less for a one TENTH AFR drop... 785=14.4.
Now look at 450mv=14.68 and 65 mv less only equals one one HUNDREDTH less AFR at 385.
14.78 is 135 mv for a whooping drop of 315mv!!!

It is NOT linear at all.

 

What inputs are effected by Adaptive Fuel Values? Can we see what they are so we can tell how the engine is adjusting itself?

(I took hdmg's post more as a discussion to where he is open to clarifications, not as an authority on how it all works.)

 

Here's a quote from the beginning of hdmg's discussion....

It appears to me that he's making assumptions and asking folks to acknowledge whether or not they are correct.

 

Harleytuner-
I have an 08 1200 with a SE airbox an supertrapp megaphones. Started to pop bad recently and white plugs. I've changed midrange AFR values to 13.0 to try and cool it down and test. It still pops bad. This is the first post that talks about increasing idle values and I've not even opened the chart to look at the existing values. It sound like you suggest this may stop roll off throttle popping?

 

Hey guys, been a lurker for a long time.

I decided to get the SE software and cables to fix the Dyno tune from the dealership (not the first time I have to fix the work done by the dealer). He was very proud of himself when he handed me the dyno sheet showing a whooping 85 hp and 90 ft/lbs torque.

I'm not happy with the performance and DEFINITELY not happy getting 25mpg.

Thanks to everyone who contributed to this thread. Very helpful. So...

I download my current map and find the ENTIRE AFR table is set to 13.2. I think the tech (and I use that term loosely) just forgot to reset the AFR table after adjusting the VE tables. That was not helping my mileage for sure. Have not run through a tank with the new AFR table yet so, I'm not sure how much of an improvement I will see.

What I'm interested in is if anyone who has an SE-211 cam and has a GOOD dyno tune would share their Spark Advance tables. There are no base maps for the 211 and my timing seems very aggressive compared to the SE-257 base maps (the SE-257 is very close to the 211 intake timing). Though, on a limited data run, I didn't see any knock retarding.

I'm wondering if the timing is too advanced, could that also be reducing my mileage.

I'm running a 2009 FLTR, 103 stage 1, SE-211 cam, Supertrap 2-1, SE stage 1 AC.

Thanks

 

Yes, if you increase the idle values from 1500 RPM's on up it will help with decel pop. You can also decrease your values in your decel enleanment tables if the popping occurrs within a second or so of letting off the throttle. Changing the idle values only effects the bike when you completely let off the throttle and the throttle position is at zero %.