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Tuners and Builders - A question on Dyno Charts

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  #11  
Old 12-15-2008, 07:54 PM
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Originally Posted by ToBeFrank
Your AFR looks like it's at 14.6, which is the closed loop AFR. Did he do the dyno at WOT? The TTS V-Tune won't tune in WOT, yet your AFR line on this dyno is nice and flat like it has been tuned. Something doesn't add up here.
It doesn't look like 14.6 from where I'm sitting. That'd be the red line. The blue line is in the 13s everywhere except a blip about 2.7k. Definitely not a closed-loop pull, I'd say.
 
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Old 12-15-2008, 07:56 PM
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Originally Posted by glens
It doesn't look like 14.6 from where I'm sitting. That'd be the red line. The blue line is in the 13s everywhere except a blip about 2.7k. Definitely not a closed-loop pull, I'd say.
Originally Posted by r0de_runr
On this chart, only the RED line is mine, the blue line is not my bike.
It's the red line.
 
  #13  
Old 12-15-2008, 08:08 PM
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Originally Posted by r0de_runr
My dyno chart shows a distinctive dip at about 3K RPM.

Could this be the Adaptive Knock Control kicking in?

I have an 09 Ultra with 49-state 103 kit, se255 cams, SE/AC and -99 SE II mufflers with stock header pipes, TTS Mastertune.

http://members.***.net/wichitagreg/greg/oct3109.jpg
Well it could be AKC. You need to look at a dyno run in Data Master and check that. If you are lean at or a little before and up to 3k yes it can be the AKC kicking in. If at or before and up to 3k data master dose not show AKC than it maybe a rich condition. When you are doing a dyno run in genreal you bringing the bike up to 2k in 4th gear and then you (depending on the operator) roll the throttle on or wick it on. Either way what is the ECM reconizing or switching to. It is going to the AE mode. The AE mode is what it is. The AE is like your accelarator pump. When in CL we are cruising along and we need to pull out around a car or truck to pass. When you roll on or wick on the the throttle the ECM goes to AE mode. So do a dyno run in Data Master have the dyno operator turn on the HP to Time scale. This should show you a HP run in how many SEC it took to get from starting RPM to 3k and to max RPM. With Data Master hooked up it should show you if the AKC kicked in. From there the operator should be able to tell if you are lean or rich in AE and adjust the AE accordingly. Your dyno run has a dip in the lower to mid AE mode and RPM range for one reason or another rich or lean. This my personal opinion.
 

Last edited by BWILD; 12-16-2008 at 11:15 AM.
  #14  
Old 12-15-2008, 08:20 PM
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Originally Posted by ToBeFrank
It's the red line.
My bad.
 
  #15  
Old 12-15-2008, 08:30 PM
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[quote=r0de_runr;4236213]My dyno chart shows a distinctive dip at about 3K RPM.

Could this be the Adaptive Knock Control kicking in?

I have an 09 Ultra with 49-state 103 kit, se255 cams, SE/AC and -99 SE II mufflers with stock header pipes, TTS Mastertune.

http://members.***.net/wichitagreg/greg/oct3109.jpg[/quote
 

Last edited by BWILD; 12-16-2008 at 11:19 AM.
  #16  
Old 12-15-2008, 09:14 PM
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Originally Posted by HerkoBagger
The TTST and it's V-Tune feature are unparalleled IMO, but in the WOT/high load Open Loop areas the actual AFR needs to be measured.
Measured with a Dyno or an adequate portable/loggable AFR sampling device.
Separate front and rear samples need to be taken.

TBF makes a good point...something just doesn't add up.
Your red AFR line being this smooth (even with AFR graph scale tight like it is) in the mid 14's would appear the this run was made while bike was in Closed Loop (less than WOT).

Again, AFR at WOT is a pretty much a crap shoot without being sampled.
Your right the dyno guy did something. Maybe he put the bike at 50% TP and threw a load on the drum hit test and took the load off. Because the AFR dose not match. Even then with load off not sure if the ECM would stay CL. I would like to see a Data Master record of this run.
 
  #17  
Old 12-15-2008, 09:17 PM
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Originally Posted by r0de_runr
No, my first dyno run was just with the factory download that came with the kit (at additional expense ). It is nearly identical to the one I just updated below.

This Dyno run was after I installed a TTS Mastertune and old SE II mufflers, and ran 5 runs with vTune. Nearly identical to the factory download and factory mufflers.

I update the image to include the AFR, which stays pretty much at 14.6.

TTS File is UH205-000. A few tweaks such as +2 degrees across the board on the timing tables.
Question and just wondering. Why the +2 timing across the board.
 
  #18  
Old 12-15-2008, 09:44 PM
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Originally Posted by BWILD
Question and just wondering. Why the +2 timing across the board.
Someone who really knows what they are doing suggested it.
 
  #19  
Old 12-15-2008, 10:04 PM
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Originally Posted by r0de_runr
Someone who really knows what they are doing suggested it.
Working the ignition tables is a good thing.
Might want to put first things first though.
Get a good handle on the AFR side of things...then work with the ignition.
Consider the competent Dyno or portable AFR device route for a complete tune.
As was said, there's a lot to be told about reviewing your DM files too.
What Data Type you select to record can tell even more.
Big help too, (I'll be a broken record here) print virtually all the TTST Help files (Master Tune help files, Data Mode help files V-Tune help files) and thoroughly read them...as many times as necessary.
With the TTST your on the right track. You'll get there.
 
Attached Thumbnails Tuners and Builders - A question on Dyno Charts-data-types.jpg  

Last edited by HERKO; 12-15-2008 at 10:32 PM.
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