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Author Topic: Not sure this looks good or not. Does anyone have any words of wisdom?  (Read 3348 times)

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mnrider

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So just had the bike retuned after some power issues. Here is the print off. What are some of your opinions? I did a stage one (head pipes, slip-on, air box. On a 14 limited SE
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GMR-PERFORMANCE

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95/114 is within the avg power numbers.  Why do you think there is an issue. The tune looks like it could be refined some but I do not think its going to be a huge gains once cleaned up.
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Jswerve

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So just had the bike retuned after some power issues. Here is the print off. What are some of your opinions? I did a stage one (head pipes, slip-on, air box. On a 14 limited SE
Looks good just ride it!
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2012 FLHXSE3 Ruby Red/Typhoon Maroon
|Color Matched Detachable Tour Pak | Fuelmoto PV | Dragos 580 cams | Dragula 2-1/Ghost Pipe | Cyclesmith 13's | Sachs heads | Yaffe Stealth III License Plate Frame| Long Angled High

mnrider

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You're right I need to stop worrying so much. Lol
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hd-dude

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Numbers are typical. Without the AFR printout on the sheet you can't really determine if the tune is on or not.

Doc 1

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What can you tell from the AFR line if the tune is correct or not? I ask this because it seems as if everyone has the same thought.....what does that line tell you except WOT AFR, what am I missing? Does it tell you how the bike runs at 3000 rpm? I'm just curious what people see in that AFR line. 
Doc
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FlaHeatWave

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What can you tell from the AFR line if the tune is correct or not? I ask this because it seems as if everyone has the same thought.....what does that line tell you except WOT AFR, what am I missing? Does it tell you how the bike runs at 3000 rpm? I'm just curious what people see in that AFR line. 
Doc

I'm subscribing, this one oughta be getting good any time now...
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HD Street Performance

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Plain and simple should be no controversy. WOT is the trace. that can be spot on and the bike runs like garbage and the lower speed ranges are all out of wack
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INDEPENDENT_1

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It tells you the oxygen sensor says it's running at that AFR at WFO. Nothing more, nothing less. Doesn't even tell you it's tuned for best power really. It just tells you that for the timing and fuel it has been set to at WFO it runs at that AFR. Is that AFR correct for best power for that bike? Dunno till you measure with a strain gauge and see where the bike makes best power. The same AFR can be achieved by retarded and fuel lean or timing advanced and fuel fat and all points in between. I retune bikes all the time that come in fat and retarded.  ;D
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Steve Cole

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Hense the question, as everyone seems to be mislead into believing that the proper AFR is always a flat "X" number across the board. While that may be so in some cases most of the time it's not for a HD engine. Typically we fine that the HD BT engine likes to be richer below 2100 and above 5500. Between 2100 - 5500 a flat AFR tends to work OK, but anyone who believes the line has to be flat is smoke'n something good.
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Doc 1

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The point I'm making is that line means NOTHING.....however the public has been led to believe if that line isn't straight as an arrow the tune up isn't any good. The forums over the years has let this go on and on to the point of we tuners better show that AFR line for them to feel good about there tune.
Independent is correct, if the 02 sensor is out of calibration so is your line, HD street performance is correct also. Steve Cole you are correct (for once) (lol lol lol lol only kidding Steve). I spend way too much time on this STUPID line so customers can feel good about their tune. I understand this is what they have been taught by these forums so it's no blame to them, however making run after run getting this line straight as an arrow, front and rear cylinders, we tuners are cooking your clutch, straining your engine and for what? I think it's time to educate the public on what a good tune is all about and forget this WOT AFR crap.
I understand that this is all about synchronizing the WOT fuel to the VE table but we have to do this from idle to WOT........we need to show the VE tables, the 3D map of the VE table, or even the V-Tune print out to open a whole new avenue for the customers to learn or look at to judge the tune. Maybe I'm asking too much but I believe after 15 years of riding EFI bikes we can be a bit more educated about EFI tuning than looking at a WOT AFR line.
Thanks for listening.
HD-Dude....I'm not bashing you.....I just took the opportunity to say this from your statement....nothing against you at all..... ;)
Doc 
« Last Edit: July 17, 2014, 09:57:29 PM by Doc 1 »
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Jswerve

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School us! I'd love to learn more!
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|Color Matched Detachable Tour Pak | Fuelmoto PV | Dragos 580 cams | Dragula 2-1/Ghost Pipe | Cyclesmith 13's | Sachs heads | Yaffe Stealth III License Plate Frame| Long Angled High

INDEPENDENT_1

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AFR, I don't even see it when I tune with 4 gas... literally. Actually kinda shocked to hear from Doc and Steve that they are posting what they are. Tune the engine to run to it's best potential for what it components that bike has on it is what a real tuners job is. Not tune the ECM or any of their tables to look pretty. What's more important, the engine running seamlessly and having linear power or the ECM tables looking pretty and the AFR line being flat? I guess if you're more concerned with a blown up dyno sheet that is laminated and framed than having a bike that runs great, maybe you need some headwork.
« Last Edit: July 17, 2014, 10:23:36 PM by INDEPENDENT_1 »
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98fxstc

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I retune bikes all the time that come in fat and retarded.  ;D

Just the bikes ?
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FlaHeatWave

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On the '09, the AFR "Targets" in the PC-V / "AutoTune" range from 13 at 80-100% throttle to 13.7 at "cruise" RPMs.

That seems to be pretty close (if not spot on) for this Bike as it has no flat spots, pulls hard in any gear from 2,200 to 5,200 and will easily go way past the pin :2vrolijk_21: ( at 5,200 it is pulling really hard, but I'm trying to "milk" the stock clutch w/ HD spring :nervous:)

Oh yea,and it averages right at 40MPG 2-up & Loaded on the Interstate at 80-90+MPH :bananarock:

Not bad for a "fooler" that has not been on a drum...

Granted, the "gurus" (I use the term with all respect, because these are some of the best guys out there!) posting here could probably eek a hair more out of it, but other than a mild curiosity, I'm in no hurry to put this bike on a drum. 

To the OP, fwiw I'm with GMR on his reply #1

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