EVO All Evo Model Discussion

WEGO 3 installation

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Old Feb 10, 2017 | 08:03 PM
  #31  
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Midrange cruise is good, get the engine hot and set the air mixture screw to 14.0 by the read out on the Wego module, noticed a lot of 15.0 and highers at idle and a little lean in the lower rpms, with the Mikuni richening up the idle also will richen the low, the low and mid should be done then.

Ok, spread out that graph with .25 sample rate, run a smooth 2500 rpm for 5 to 10 seconds in 3rd gear and then whack the throttle running into 5800 rpm range so we can see the main jet afr's
 
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Old Feb 10, 2017 | 08:09 PM
  #32  
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Originally Posted by 98hotrodfatboy
Hey John, Looks pretty good up to 4k. The one thing I didn't like was quite often the rpm's would drop 1000-1500 even 1700 in a fraction of a second.
Looks like he is shifting with the afr's spiking from reversion and the tight graph is exposing the spike. Spreading out the graph will make everything more calm and readable
 
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Old Feb 10, 2017 | 08:15 PM
  #33  
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Originally Posted by 1997bagger
Looks like he is shifting with the afr's spiking from reversion and the tight graph is exposing the spike. Spreading out the graph will make everything more calm and readable
The reason I noted that was because the AFR'S did not change, they stayed the same during the big drop in rpm's....
 
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Old Feb 10, 2017 | 08:26 PM
  #34  
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Attached a pic of a Wego AFR/RPM recording, it will be less aggressive with the recording rate slowed down and more of a dyno run graph smooth line
 

Last edited by 1997bagger; Jan 26, 2019 at 11:59 PM.
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Old Feb 11, 2017 | 01:48 AM
  #35  
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Originally Posted by 1997bagger
Midrange cruise is good, get the engine hot and set the air mixture screw to 14.0 by the read out on the Wego module, noticed a lot of 15.0 and highers at idle and a little lean in the lower rpms, with the Mikuni richening up the idle also will richen the low, the low and mid should be done then.

Ok, spread out that graph with .25 sample rate, run a smooth 2500 rpm for 5 to 10 seconds in 3rd gear and then whack the throttle running into 5800 rpm range so we can see the main jet afr's
Yeah, I'm seeing the same. Best I can, Lean in the idle, & lower rpm's.
I'd fatten it up, there & best I can tell looks a little rich around 3000rpms, but I wouldn't mess with that until you set your sample rate to .25 as bagger said.
Won't hurt it running rich, but lean you won't like the outcome.

Ride Safe,
Harold
 
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Old Feb 11, 2017 | 09:37 AM
  #36  
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I had set the wego sample rate to .50 sec and made sure that my timing was set to tdc as per the dyna 2000 instructions. I changed the pilot to 27.5 and still have the 165 main in it. I set the air screw to 2 turns out from fully seated. I had turned off the voes on the dyna module, but the instruction state that it should be unplugged, what do you think? Is there anything I am missing? Dont know if I can get a ride today but tomorrow I will and post another log file.
 
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Old Feb 11, 2017 | 10:24 AM
  #37  
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Originally Posted by jcsurf
I had set the wego sample rate to .50 sec and made sure that my timing was set to tdc as per the dyna 2000 instructions. I changed the pilot to 27.5 and still have the 165 main in it. I set the air screw to 2 turns out from fully seated. I had turned off the voes on the dyna module, but the instruction state that it should be unplugged, what do you think? Is there anything I am missing? Dont know if I can get a ride today but tomorrow I will and post another log file.
First thing, as stated set your sample rate to .25 It makes it a lot easier to read the graph. Do as 1997bagger suggested & richen up the idle. You can do that 900-1000 rpms & watch the led readout on the Wego. I set mine 13.8-14.0. It's gonna jump around a bit, so just try to get a average.
Just remember , lower #'s equal more gas, & higher #'s equal less gas .As far as voes, I used mine with no problem. I don't remember in the instructions where it said to disconnect voes, but its been over a year since I've done this, but I do know I used mine & still do.
Just follow 1997baggers lead & you'll be fine . He's more familiar with your carb than I am. I've only tuned CV'S & S&S.

Ride Safe,
Harold
 
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Old Feb 11, 2017 | 12:44 PM
  #38  
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Read the past posts, experiance can keep from mistakes we made.

Need a wide open throttle run, read past posts
 
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Old Feb 11, 2017 | 01:47 PM
  #39  
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As stated, richen the idle circuit. If I remember correctly 3 turns is not uncommon on a CV or Mik.....

I will say like every one else, The Sample rate needs to be .25
 
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Old Feb 11, 2017 | 02:04 PM
  #40  
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Originally Posted by 98hotrodfatboy
As stated, richen the idle circuit. If I remember correctly 3 turns is not uncommon on a CV or Mik.....

I will say like every one else, The Sample rate needs to be .25
About 3.5 on my Bob Woods CV carb

Ride Safe,
Harold
 
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