sepst questions
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Road Master
Joined: Dec 2008
Posts: 872
Likes: 20
From: Niagara Falls Canada
sepst questions
Ive set all my ar's in most ranges at lower rpms to 13.8 , yet when I go for a data log run and look at the recorded ar it always runs at 14.6. even at 5 grand wide open throttle runs it still says 14.6. the only time it drops to 13.8 seems to be when you roll off the throttle and it leaves a small blip down to 13.8 then back up to 14.6 on graph chart. even tried 13.2 for a while ,still reads 14.6
I had tried moving all the closed loop bia's up as recommended in training disc and it didnt seem to help, always stays at 14.6 . I now have the closed loop bias valves all moved up so high the ones at high rpm and high ve start to turn red. Its beginning to look like no matter what I do it wants to run 14.6. Another thing I am wondering is it actually running where I set everything by setting closed loop bias that it tweeks o2 sensor ability to read accurately and it really is where I set it. since i dont have a o2 analyser I cant actually check it.
I am beginning to think the only way to get a 13.8 or what ever I want ar is to get it on a dyno find out where your desired ar is in every gear and rmp based on exhaust gas being analysed and run in open loop cutting out the o2 sensors since being used since on a dyno you know and set it for what u want in every gear and rpm range . Am i correct in my assumptions or am I missing some thing here.
I had tried moving all the closed loop bia's up as recommended in training disc and it didnt seem to help, always stays at 14.6 . I now have the closed loop bias valves all moved up so high the ones at high rpm and high ve start to turn red. Its beginning to look like no matter what I do it wants to run 14.6. Another thing I am wondering is it actually running where I set everything by setting closed loop bias that it tweeks o2 sensor ability to read accurately and it really is where I set it. since i dont have a o2 analyser I cant actually check it.
I am beginning to think the only way to get a 13.8 or what ever I want ar is to get it on a dyno find out where your desired ar is in every gear and rmp based on exhaust gas being analysed and run in open loop cutting out the o2 sensors since being used since on a dyno you know and set it for what u want in every gear and rpm range . Am i correct in my assumptions or am I missing some thing here.
Ultimate HDF Member
Joined: Nov 2008
Posts: 6,682
Likes: 12
Although I have the same tuner, I have not played with the software or tried changing the settings but It sounds like you are not flashing the new settings into the ECM. From what I understand, the O2 sensors on your bike are narrow band and you cannot tune the bike perfectly with these. When a tuner puts the bike on a dyno, they remove the narrow band O2 sensors and put in wide band O2 sensors. I was told by someone who seems knowledgable about tuning that this is neccesary to get the AFR's correct at idle and above about 60% throttle. But he could be full of **** because he wanted $360 to tune my bike. 
Last edited by 1931jamesw; Jun 26, 2010 at 06:45 PM.
Thread Starter
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Road Master
Joined: Dec 2008
Posts: 872
Likes: 20
From: Niagara Falls Canada
ita flashing ok
it loads fine , i know this because i have increased the idle setting and it ran where it was set. i just think unless it is dynoed and left in open loop it will always run where the narrow o2 sensors tell it to. I have also changed cranking fuel to help it start and warm up iac setting at it did help it start better. I have tried 3-4 diffrent programs until I found one with my 103 255 kit exactly and it did different things with all of them so I know it is loading fine.
Stellar HDF Member
Joined: Sep 2007
Posts: 2,458
Likes: 671
From: Vancouver Island B.C.
If you are enabling the smartune feature when you flash the map you will see 14.6, as the program automatically sets the afr table to that to collect data from the o2 sensors. The 14.6 that you see is the "desired" afr, not the actual. The reason you probably see 13.8 for a blip is the de table drops your "desired" afr to 13.8. Again the "desired" afr of 14.6 is only a switch to turn on closed loop. Your actual afr in closed loop is determined by your clb table. If you want to run 13.8 you just set that on your afr table and if your ve tables are calibrated correctly you will receive 13.8.
Thread Starter
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Road Master
Joined: Dec 2008
Posts: 872
Likes: 20
From: Niagara Falls Canada
smart tune
I have been enabling smart tune every time I reload or after I have done a smart tune generate from past runs. I will try reloading and not enabling the smart tune then do a data run to see what I get for readings. thanks
Tourer
Joined: Jul 2009
Posts: 269
Likes: 1
From: Madison WI
also check the 'adaptive fuel reset' each and every time you reflash.
for the 'enable smart tune' there should be a big pop-up warning box, saying that this 'flash' is only for smart tune data gathering. it's not terribly clear, but you don't want to do your daily riding under that reflash.
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Road Master
Joined: Dec 2008
Posts: 872
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From: Niagara Falls Canada
adaptive
i have been clicking reset adaptive fuel and enable smart tune every time I reflash. could try loading without click both I GUESS and see what it runs like during data recording then look at data after.
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Road Master
Joined: May 2009
Posts: 930
Likes: 4
From: Jacksonville, FL
I had the SEST installed on my bike the other day and was thinking about ordering the software and cables to mess with it myself. After reading this thread, I think I will leave well enough alone. Seems pretty involved, not going to take the chance of messing it up.
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Road Master
Joined: Dec 2008
Posts: 872
Likes: 20
From: Niagara Falls Canada
not complicated
after not clicking reset adaptive fuel and enable smart tune buttons on a reload, the ar runs exactly where I set it at 13.8. on throttle downs it blips down to 12.8 im guessing that is because I have the cloosed loop bias cranked up too high. now that i can see where it is actually running I can try other things. Ii also had it set to run at 14.2 at 3000 rpm for hiway cruising at still reads 13.8 ,Im guessing that the cloosed llop bia may too high. Ill try a few more changes at least it reads what the ar chart is set for now. cruisng at 3000 rpm at 80 miles an hour the engine temp is 253. not sure if that is normal but it seems to run around there with every test i have done.
2 wheel it really isnt that hard and lots of people in here help you out with problems. sounds like your bike is still stock and you had the sert added to it. the dealer probably just used a map from the harley site which you get to see all the possible combinations of different engine builds to suit your application. I am not sure what he put on your bike. beleve the vci modual stores your last load on it so you may able to download what was put on your bike so if what every you try , you could reload it back in to your bike. anyone know how to do this. I do know the harley modual cant retrieve stock programs off a bike, I believe tts mastertune can from what I have read so far.
unless you have changed air cleaner -pipes of had engine work
(cams heads) I not sure it wil make a lot of difference in your case unless you dyno it, guys have told me their stock engines gain hp not sure how much for the about 300 dollar cost. I still want to get mine dynoed but would rather wait until i get mva heads and new pipes, until then my butt tune dyno will have to do.
2 wheel it really isnt that hard and lots of people in here help you out with problems. sounds like your bike is still stock and you had the sert added to it. the dealer probably just used a map from the harley site which you get to see all the possible combinations of different engine builds to suit your application. I am not sure what he put on your bike. beleve the vci modual stores your last load on it so you may able to download what was put on your bike so if what every you try , you could reload it back in to your bike. anyone know how to do this. I do know the harley modual cant retrieve stock programs off a bike, I believe tts mastertune can from what I have read so far.
unless you have changed air cleaner -pipes of had engine work
(cams heads) I not sure it wil make a lot of difference in your case unless you dyno it, guys have told me their stock engines gain hp not sure how much for the about 300 dollar cost. I still want to get mine dynoed but would rather wait until i get mva heads and new pipes, until then my butt tune dyno will have to do.