| Author | Message | ||
     M1combat |
As I understand it... When the AFV goes up, the ECM is removing fuel. As the AFV goes down it's adding fuel. Thank you. Also... Say I add 10% fuel to the closed loop area. How many points can I expect the AFV to move? | ||
| Id073897 |
No. Fuel rises and drops with AFV. It's a percentage of the fuel bin taken from the map. Regards, Gunter | ||
| Alessio66xb12r |
....."when the afv..." M1 when the "learn mode" during closed loop read a rich condition(o2 sensor) the AFV goes down (less fuel) making the opening time unit of injectors shorter on the whole map same thing when it read a lean condition adding fuel ( longer unit time..) M1 thrust me ...JUST TRY 1)disconnect the sensor and send the closed loop to hell 2)set the afv to 100 3)find the right map for you set/pressure ....and when in need you can change the map or even play with the afv depending of your riding condition good luck Alessio | ||
| M1combat |
My afv tends to run at about 85-87. I live at 5K feet elevation and I regularly change 3K feet or more on a ride. I would rather not get rid of the learning mode. That said... I tried just that the other day (setting AFV to 100 and disconnecting the O2) and the bike ran well but rich. A friend was following me and said that when I would get on the gas at about 3K RPM he could smell fuel. To me that means I'm ok with disconnecting the O2 but not at 100 AFV. Maybe at 85-87 though. So... Why not let the AFV settle at 3KRPM (mine would be about 85-87) and tune for 14.7 AFR in the closed loop, then plug the o2 back in? Then I would have a 14.7 map in the closed loop area that the closed loop would be ok with, but I could then tune the more fun areas of the rpm/rev table to my hearts content. I would assume that if I should do that and then head back closer to sea level I'd see an AFV closer to 100 like everyone else does. I think in this manner I can tune the bike for cruise mode and for max power, still be safe from a lean condition and still have my auto adjusting AFV. If I'm wrong on anything please correct me. One more thing... Does ECMSpy log the narrowband O2 voltage in such a way that megalog viewer's narrowband O2 functionality (with regards to the VE analyzer) still works? | ||
| M1combat |
Nevermind  ... I found the answer here... http://www.ukbeg.com/modules.php?name=Forums&file= viewtopic&t=24254&highlight= | ||
| Alessio66xb12r |
M1 if you live in the mountains i assume a lot of u-turns and a lot of twisties and probably your riding is not an ultra-quite style one so maybe you are running in and out of closed loop frequently so the ecm cannot follow you changing the afv depending the altitude , this is a fact. closed loop = no map , ecm follows sensor inputs to keep the ratio at 14.7. if i'm wrong somebody please correct me . i followed UKBEG and those guys....something special about ecmspy and pc knowledge... read the STEVE'S TUNING GUIDE a lot of info for you ....and at one point he speaks about mountains . one solution for you is to let the bike going in closed loop steady rpm for more than 4 or 5 minutes each important change of altitude or change manually the afv even with a palm each altitude change. BEFORE doing this you need the right map for your set-up ....best way to make a fuel map is a wide band dyno . in your altitude changing condition a good thing is to always monitor the co ratio while riding and i know there are instruments in the market doing this . bye Alessio | ||
| Jwz7 |
so,whats the perfect afv to shoot for? close to as 100% as possible? with a techlusion tfi box i had. it was 107 and i took off the box reset the tps and afv.after riding the bike it is now 117%.so did i do worse removing the box or better? | ||
| Alessio66xb12r |
if your AFV , after a ride , is 117% its because the o2 sensor read a lean condition while running in closed loop "learn mode". even with TFI it was a little lean but really acceptable 107% put the TFI back and set it to read as close at 100% as you can i cant' help you with TFI a question , what you use to read AFV values ???? bye Alessio | ||
| Jwz7 |
alessio, i downloaded the ecmspy and made a cable and so fourth.so,i used the ecmspy to look at the afv and to reset the afv and tps.i removed the tfi box completely.i was told that with the race ecm i did'nt need the tfi box,but i can easily put it back on and do as you said. thank you for your response and help! it is much appreciated! | ||
| Alessio66xb12r |
assuming 107% with a tfi and 117% without you can use tfi like enricher or .... better you can use ecmspy to manipulate the fuel maps and make the right map for your set-up , in this case considering that the race kit ecm is developed for kn and race kit can ,maybe, you will start near the "optimum"....and all you need is just to enrich some cells...maybe....just a guess. bye Alessio | ||
| Jwz7 |
alessio, thanks for your input and advice.you are right about doing alittle remapping where i need it.i do have the complete race kit.before i change anything,i have to do plenty of reading before i'm confident enough to start making changes to the map.(p.s.after speaking with you last i reset the afv again to 100% this time i went for alonger ride at a more steady speed and the afv is now reading 110% which is atleast better than 117%) thanks,jim (Message edited by jwz7 on April 06, 2008) |
