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Exhaust Flames?

Just put your uncles HD on a dyno



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Ricenoodle said:
So Dan Pool posted a video about his exhaust backfiring and showing flames with every rev using a TBR full exhaust. I have one with a JuiceBoxPro, don't remember it doing it before or after install of blockoff plates. Kinda cool IMO Anyone experience this or know how to replicate it? https://www.facebook.com/groups/77230850867/
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[ame=http://www.youtube.com/watch?v=5FChw3m33gA]2010 FZ6R - TBR BLACK SERIES - YouTube[/ame]

Caused by excess/unspent fuel passing through and igniting in the exhaust. It occurs when giving excess throttle and running rich.
 
SpawnXX said:
2010 FZ6R - TBR BLACK SERIES - YouTube

Caused by excess/unspent fuel passing through and igniting in the exhaust. It occurs when giving excess throttle and running rich.
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Yes i understand that's what's happening but is it a good thing or bad thing? It looks cool IMO but not if it's bad to run rich. I can't get mine to do it, same exhaust but just with JB pro and blockoff plates installed.
 
Ricenoodle said:
Yes i understand that's what's happening but is it a good thing or bad thing? It looks cool IMO but not if it's bad to run rich. I can't get mine to do it, same exhaust but just with JB pro and blockoff plates installed.
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Your blockoff plates are the variable. By reducing the "popping" you are reducing the flames. Two Brothers will tell you that it doesn't cause damage. Most mechanics that I have talked to have said the same thing.
 
ask our exhaust specialist Marthy.

mine will do it sometimes, but only if i sit there and revit up a few times then let off and hit it again. I would think it could cause your packing reduced life if its igniting inside the exhaust... but dont know... I did it the first time I was showing the wife how at low revs the Marthy exhaust wasn't too loud, but at higher revs is when she roars
 
Against popular belief the popping comes from lean condition on decel. Blocking the AIS actually reduce the amount of air dump in the exhaust yhe result in less popping. Popping occur when the AF ratio go over 15:1 or so. If you have a fuel controller add 40% of gas in the zero column from 2K to 8K. That should fix it. 40% sound like huge but 40% of about nothing is still not much...lol

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Marthy said:
Against popular belief the popping comes from lean condition on decel. Blocking the AIS actually reduce the amount of air dump in the exhaust yhe result in less popping. Popping occur when the AF ratio go over 15:1 or so. If you have a fuel controller add 40% of gas in the zero column from 2K to 8K. That should fix it. 40% sound like huge but 40% of about nothing is still not much...lol

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Marthy,
Using your theory, could i recreate the flames using my Juicebox even with AIS installed and have the the best of both worlds, reduced popping and flames when it does decel? If so I'd be tempted to hookup the laptop.
 
Ricenoodle said:
Marthy,
Using your theory, could i recreate the flames using my Juicebox even with AIS installed and have the the best of both worlds, reduced popping and flames when it does decel? If so I'd be tempted to hookup the laptop.
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:facepalm::facepalm::facepalm:
 
Mine spits flames but only when it is cold.

For example leaving the bike for a few hours and then starting it, whenever I come off the throttle I get that kind of "bom bom bom bom POP" sound.

Nice big blue flames
 
Backfiring occurs even with the stock exhaust in place,
it is just that the breadbox reduces how much you hear it.

As far as flames go if you open up the throttle and close off abruptly it will backfire no matter,
-the amount will vary relative to previously mentioned options (AIS blockoff's, exhaust mod type, removed catalitc converter etc).

I am pretty sure Marthy isn't trying to burn you,
only explaining how/ why it occurs to help you understand what is happening.
 
So i adjusted the 0 column from 1000 to 1500 rpm with 40. Is this correct? or is it suppose to say 4 for 4 percent richer than stock?
 

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1250 to 1500 start with -4 and see how it goes. From 3K to 8K dump 40% or so. Email me your map and I will copy and paste the zero column if you want. Whats your exhaust set up again? Witch map is this?

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Marthy said:
1250 to 1500 start with -4 and see how it goes. From 3K to 8K dump 40% or so. Email me your map and I will copy and paste the zero column if you want. Whats your exhaust set up again? Witch map is this?

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I have a TBR full exhaust with Juicebox Pro with AIS blockoff plates installed. Currently running your Sport Rev A and i like it alot, it just rough on idle and sputters. Calm down a bit when it's warm but not smooth at all. I'm hoping this would eliminate it and if it creates flames, then it's a positive but my main goal is to have it not sputters at idle. Email sent to you for mod, thanks in advance.
 
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Cool I don't have my PC with me but will email you back tomorrow.

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Finally able to achieve flames and a smoother idle thanks to Marthy. Here is the video. Keep in mind engine has to be warmed up for 5 min in order to do this which you should do anyway prior to riding. It'll continue to flame with every rev, i stopped after one because i felt like a mad scientist creating Frankenstein so i capture a quick video. I can send it to your email if you'd like the updated maps which is based off of the Sport Rev A.
https://www.facebook.com/photo.php?v=674233779287810
 
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