HarleyTechTalk

Dyno & Tuning Zone => AFR & Tuning Zone => Topic started by: anthonyflhx on February 11, 2024, 01:19:02 PM

Title: Running rich after baffle change
Post by: anthonyflhx on February 11, 2024, 01:19:02 PM
My touring m8 was dyno'd and running great. I didn't like the air cleaner as it stuck out and kept hitting me knee. I changed to the oval Harley ac with k&n filter. I also changed out my performance baffles from 2.25" to 2", if i remember right.
Now my bike is running rich. I barely get 200 miles a tank. I have the tts mastertune, and was wondering could i select all the tables and reduce them 1 notch or 2 leaner?
Or do i have to use flight recorder to record data runs and merge?
Appreciate any feedback. Thanks
Title: Re: Running rich after baffle change
Post by: rigidthumper on February 11, 2024, 02:52:41 PM
Use Flight Recorder & V-Tune for a couple sessions, and the VE tables should clear up (after checking for fouled spark plugs).
Title: Re: Running rich after baffle change
Post by: anthonyflhx on February 14, 2024, 06:30:55 PM
I did 3 flight recorder runs today and this was the last shot of the vtune3 tables.
Does this look pretty good or do i need to do a few more runs?

If more runs, is there a way to just target the purple cells without doing a full run in every gear, speed and rpm?
Appreciate your feedback.
Screenshot_20240214_202151_Acrobat for Samsung.jpg
Title: Re: Running rich after baffle change
Post by: pauly on February 14, 2024, 10:29:00 PM
Hi Anthony,
I'd do a few more runs. Try (for example), just above idle, in second gear, 20%, and 30%, etc etc throttle, and leave the throttle at that setting, until the bike is doing as many revs as it will do. That will gather a bunch more data that is missing thus far.
For the purple cells, the few more runs might gather the missing data.

Thanks
Pauly

Quote from: anthonyflhx on February 14, 2024, 06:30:55 PMI did 3 flight recorder runs today and this was the last shot of the vtune3 tables.
Does this look pretty good or do i need to do a few more runs?

If more runs, is there a way to just target the purple cells without doing a full run in every gear, speed and rpm?
Appreciate your feedback.
Screenshot_20240214_202151_Acrobat for Samsung.jpg
Title: Re: Running rich after baffle change
Post by: anthonyflhx on February 15, 2024, 06:03:11 AM
Thanks for the feedback. One thing i noticed, that may be affecting those first 3 columns, is my main lambda table's first 3 columns went open loop. I had all columns except last 2 originally set to 0.990.
I don't know why the first 3 changed to 1.055 and nothing changed from other columns?
Do i need to set first columns back to 0.990?
20240215_075623.jpg
Title: Re: Running rich after baffle change
Post by: rigidthumper on February 15, 2024, 07:21:53 AM
When using narrowbands to gather data, I find more cells filled if I set everything 90 KPA & below  to 1.0 lambda, and then reset the desired table to original after completing the Vtune process.
Title: Re: Running rich after baffle change
Post by: anthonyflhx on February 15, 2024, 10:46:05 AM
I just did a 45 minute flight recorder and made sure a good amount was spent from 1500rpm to 4k. I mean i hit every cell from 1500 to 2500 for every gear. Why aren't the first two columns gathering any data?
20240215_124039.jpg20240215_123956.jpg
Title: Re: Running rich after baffle change
Post by: rigidthumper on February 15, 2024, 04:21:14 PM
Because that data is outside the normal operating limits- it's decel, mostly at high vacuum (low MAP). Blend to the left from known good data (white cells) .
Title: Re: Running rich after baffle change
Post by: anthonyflhx on February 18, 2024, 05:55:34 PM
Thanks Rigid for all the help. I have another question if you don't mind.
Here's the egr table for a run and it shows numerous areas where's im more then 5% out of range.
However, if I apply changes the next screens Verizon tables don't really show any out of range that have gathered data. Since most cells are white is that a good run and ready to finalize?
I don't understand why egr was so out of range but ve tables looked good to my newbie eye.
20240218_193108.jpg
20240218_193131.jpg
Title: Re: Running rich after baffle change
Post by: rigidthumper on February 19, 2024, 04:17:21 AM
The EGR is more of a "cleanup", after getting the VE tables within close (less than 5% deviation) parameters. It kind of represents the "spit-swap" that occurs in the intake manifold, and is good for smoothing the tune. I always accept those changes as part of the final edit, flash and ride/evaluate manners.
Title: Re: Running rich after baffle change
Post by: anthonyflhx on February 19, 2024, 06:18:02 PM
Thank you very much. Short test was nice.

Quote from: rigidthumper on February 19, 2024, 04:17:21 AMThe EGR is more of a "cleanup", after getting the VE tables within close (less than 5% deviation) parameters. It kind of represents the "spit-swap" that occurs in the intake manifold, and is good for smoothing the tune. I always accept those changes as part of the final edit, flash and ride/evaluate manners.