I was running with an AFR table where I set all the stock closed area's to 14.2. Power seemed good, but she was sucking up the go-go juice too much for my liking. I know ya gotta burn the juice to play, but I'd like to stay at 40 mpg or so for general riding - mixture of city and highway.

I think I have my VE tables in good shape, so I just switched to this AFR table:



I will see if this one is better on the mileage...still seems pretty good performance wise.

Did a data collection run with this one, one occurance of knock retard of 2, on each cylinder (data run was about 20 miles - 10 of twisties, and 10 of highway). Engine temp was real good, 228-250...went up to 260 at the end, when i idled for a few moments before turning off recording. maybe i should richen up the idle mixture too? CLB is set at 60 over the original values, across the board.

I'd be cool if alot of folks posted their AFR table, and some info about it, like home tune or professional tune, tuned for mileage, or tuned for performance, etc....

 

Here are my AFR and Timing tables. I am gonna try and take a ride shortly and check for knock.

 

what kind of mileage are you getting with that tune?

 

Haven't checked milage yet. It is a work in progress. Just went for a little ride. Got a little spark knock on the rear cylinder, so I'm gonna fatten it up to 13.5 and advance the timing 2 degrees across the board. The richer AFR should eliminate the existing knock. If I still get knock at 13.5, I'm gonna retard the timing in that area.

 

i just got back from a 20 miler......i richened up the afr's in the lower range:


check out the engine temp graph:



took several miles to get over 212, the far right of the graph is 232 degrees.

Any way to share data run files i wonder?

mileage for me seems right back where i want it -230 miles per tank. i watch the miles remaining, and add the distance went to track my mileage progress...i know it's not accurate, but at least it's a number (and hopefully consistent). stock i was 250-260...with my afr's at 14.2 i dropped down to 210ish. i would imaginge yours will be lower with the 13.8 afr's...

 

Advancing the timing should help the milage, but I don't know how much.

 

Replaced the 13.8 w/13.5, boosted the timing out another 2 degrees. Uploaded the map last night and set the VCI to record. Rode to work this am, nice and cool weather wise. Bike ran fine, couldn't audibly detect any signs of knock but my hearing isn't the best.

Be warmer this afternoon when I head home, I'll have two data files to look at. Probably going to stick at 13.5 for a while and continue trying to shape the ignition timing profile.

 

Ok, checked for knock and both cylinders completely flat. So I'm adding 2 more degrees advance across the board. The wife is probably gonna ride a bit with me today so I can record a bit w/a little extra load.

 

I'm pretty sure there is no way to win with any explanation if your wife see's that statement!

 

I'd like to offer my opinion. You are going to be wasting fuel if you are running richer than 14.4 in your cruise area. With your timing tables there are areas where it is possible to add enough timing to go past MBT ( maximum brake torque) and still not see knock retard. In the data shot you posted the knock retard is being generated a few frames before where the cursor is actually placed, probably around frame 456-57. To me that looks like it is where you have just wacked the throttle. Sometimes you can add a little in your ae table to eliminate that. Why is your data log showing the map in In. Hg. when timing tables are kpa? Could you refresh me on what your bike is and what map you are running?