Need some knowledgeable advice
Elite HDF Member
Joined: Apr 2008
Posts: 4,718
Likes: 11
From: Back in the Good Ole USA. South Carolina to be exact.
It already had the appropriate map loaded, and further dealer tuning, but it's still too lean. I'll need to make changes to that map by the seat of my pants/instincts, until I can get it to a professional tuner to do it correctly. It got up to 50 outside today, I got it out and let it warm up around 5 minutes and it still sneezed and died when I went to take off.
Road Captain
Joined: May 2009
Posts: 642
Likes: 0
From: Haslet, Texas
Actually the SEPST Smart tune feature adjusts the VE tables and not the AFR table. It does this by having you select smart tune reflash option then it places the entire map at 14.6:1 so the entire range is closed loop it then takes the o2 sensor readings and compares them with the desired setting of 14.6:1 and makes suggestions as to VE settings. Once you make the changes and reflash your ECM with the new map without selecting reflash for smart tune and only select to reset adaptive fuel, It reverts to using the AFR table as it is set in the map. You can then manually set the AFR table as desired. You can also leave the closed loop areas closed loop but richen it by adjusting the closed loop bias table up to .5 AFR either way from 14.6 although I don't know why anyone would want to go leaner. Then ride it if it starts fine and runs good with no decel popping and fuel mileage is acceptable then you are done. It is in fact not rocket science. I purchased the instructional DVD and it is informative but not required as all the info is in the help file if you read it. There is a guide included with the software specifically for the Smart tune feature. Follow it step by step. Once finished you can also richen by simply adding a certain percentage to the VE tables for each cylinder or just one. You can do this for the entire VE table or just certain areas.
Banned
Joined: Sep 2009
Posts: 7,580
Likes: 7
From: The Internet (& Dyer, Indiana)
When you ask questions such as yours you will get a million different answers and opinions. In keeping with that tradition - here's mine...
Get a Power Commander 5 (PCV) w/AutoTune. FuelMoto is a good place to start.
With the PCV and AutoTune set-up you can tune it yourself. The AutoTune feature gives you some real data that you can use to adjust your fuel map. You won't be shooting in the dark.
On the other hand, if you don't want to spend the time doing the tuning yourself, then obviously, find a good tuner and use the tuning device they recommend.
Get a Power Commander 5 (PCV) w/AutoTune. FuelMoto is a good place to start.
With the PCV and AutoTune set-up you can tune it yourself. The AutoTune feature gives you some real data that you can use to adjust your fuel map. You won't be shooting in the dark.
On the other hand, if you don't want to spend the time doing the tuning yourself, then obviously, find a good tuner and use the tuning device they recommend.
Thread Starter
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Tourer
Joined: Oct 2010
Posts: 406
Likes: 241
From: NW MO
@Blk and Chrome- helpful info about the resources built into the SEPST- thanks.
@Pine Tree- Driveability was better before with more fuel (PCIII and some +numbers thrown at it). Also, I just put on a set of used xied's for kicks, and it was better (not the way I want to do the job though). Better meaning less throttle % to gain/maintain speed, pull hills, all around it felt stronger with the additional fuel.
@Jackie999- Your knowledgeable input is appreciated, I will heed the advice.
@jluvs2ride- The dealer tech did the smart-tune on the dyno. I found a helpful tip from MrWizard in another thread that VE tables should be corrected +7%, I wonder if he knew that.
Thanks all for helping me out with the decisions to be made, I appreciate your time.
@Pine Tree- Driveability was better before with more fuel (PCIII and some +numbers thrown at it). Also, I just put on a set of used xied's for kicks, and it was better (not the way I want to do the job though). Better meaning less throttle % to gain/maintain speed, pull hills, all around it felt stronger with the additional fuel.
@Jackie999- Your knowledgeable input is appreciated, I will heed the advice.
@jluvs2ride- The dealer tech did the smart-tune on the dyno. I found a helpful tip from MrWizard in another thread that VE tables should be corrected +7%, I wonder if he knew that.
Thanks all for helping me out with the decisions to be made, I appreciate your time.
Thread Starter
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Tourer
Joined: Oct 2010
Posts: 406
Likes: 241
From: NW MO
@tgshoe- big thanks for that post, it's sounding like it won't be a big deal at all!
@2black1s- your opinion was appreciated, and not a bad way to go if I end up not having time to learn and use the tool I already have.
@2black1s- your opinion was appreciated, and not a bad way to go if I end up not having time to learn and use the tool I already have.
Road Master
Joined: Nov 2009
Posts: 1,218
Likes: 0
From: Yakima WA
As others have said, you SE Pro Super Tuner does have an auto tune type feature built into it, but the tuner can be more complicated to use that some of the others on the market. In the hands of a good tuner (or self tuner that takes the time to understand it) the SEPST can produce good results (look at my sig line, stage II 103 delivering 92 hp and 106 tq with SE 255 cams).
Get the video and spend the winter studying how to use the SEPST. You would have to invest the effort to learn which ever tuner you buy, unless you plan to have it tuned or rely on a canned map.
Everyone keeps referring to fuel curve and AFR, but what about ignition curves? They also play a critical role in how the bike runs.
Banned
Joined: Sep 2009
Posts: 7,580
Likes: 7
From: The Internet (& Dyer, Indiana)
Please excuse my sarcasm. Nothing personal intended.
I found humor in the new tuner recommendation after seeing the dealer sell him a "new tuner" and still not solve his issues.
Your advise was valid. I was just being a clown.
Personally, I'd have thrown the PC back on and found a reputable tuner.
Adding "0.5" to your limited AFR ain't gonna do enough, if they can't change your base map enough to give you some real fuel.
I found humor in the new tuner recommendation after seeing the dealer sell him a "new tuner" and still not solve his issues.
Your advise was valid. I was just being a clown.
...... but richen it by adjusting the closed loop bias table up to .5 AFR either way from 14.6 .......
Adding "0.5" to your limited AFR ain't gonna do enough, if they can't change your base map enough to give you some real fuel.
Last edited by Faast Ed; Nov 28, 2010 at 11:49 AM.
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