Tfrenchy
Adjunct
Reged: 09/06/09
Posts: 123
Loc: La Rochelle - France
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hello all,
because I thought my exhausts (tappered ones) were not loud enough, i drilled some holes ...
Now it sounds good but lot of pop when decelerating.
My bike (America 2009 EFI) is already remapped with the TOR map.
Is there any tip to avoid that poping , please ?
Thanks for advices.
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I do not read/write english very well. Thank's to be patient.
Triumph America/Speedmaster French community : http://www.yogourtnoway.com
Edited by Tfrenchy (06/19/11 01:07 PM)
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The_Dog33
Fe Butt
Reged: 02/01/07
Posts: 16982
Loc: NE PA USA
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Did you create any exhaust leaks when doing the drilling? That could do it. Afraid I'm not much help on the EFI bikes.
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I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!
some shots of our bikes
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Tfrenchy
Adjunct
Reged: 09/06/09
Posts: 123
Loc: La Rochelle - France
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I just drilled the plate (disc) that is at the end of the exhaust. Just near the big tube inside. (I don't know how to explain)
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I do not read/write english very well. Thank's to be patient.
Triumph America/Speedmaster French community : http://www.yogourtnoway.com
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Bugbear
Adjunct
Reged: 05/16/10
Posts: 144
Loc: Vienne, France
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Bonjour Tfrenchy.
I am English but live in Vienne. We sometimes visit La Rochelle so it would be good to meet up for a coffee sometime.
Gary.
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My girlfriend thinks I'm a stalker...
Well, she's not actually my girlfriend yet.
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NIbiker
Learned Hand
Reged: 01/11/05
Posts: 1327
Loc: N Ireland
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Bonjour Thierry.
I hope your diagram explains, I think you only removed A.
[image]http://www.yogourtnoway.com/forum/download/file.php?id=83[/image]
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foglefar
Learned Hand
Reged: 03/09/05
Posts: 1972
Loc: Brisbane, Australia
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Bonjour mate.
All Our EFI Triumphs pop when decelerating ... IF the AI is still intact and the O2 sensors are still operating. You must disable them to stop the popping.
The pop usually occurs in the headers when the computer tells the AI to pump more O2 into the fuel mix on closed throttle to deliberately ignite unburnt fuel detected in the headers.
You have drilled a hole in your rear baffle and the popping sounds much louder and you're noticing them more. Drilling the baffle won't make it pop any more or less.
There are several threads on eliminating popping. Try searching for EFI and AI elimination and Popping.
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Cheers, Richard
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09 America, Staintune Pipes, K&N, Breathe, Hagon Nitros, AI & O2 removed, tune 20184 (modified), MTX-L a/f gauge
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exodortch
Member
Reged: 03/02/09
Posts: 57
Loc: toronto
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I have an 09 EFI as well and still have some popping after changing exhaust and having the richer EFI map downloaded.
+1 to Foglefar, the air injection and O2 sensors are causing the unburnt fuel to ignite. there are instructions downloading new EFI maps that will also disable the O2 sensors here.
http://www.bonnevilleamerica.com/forums/...part=1&vc=1
Air injection removal must be done mechanically. Also, there was some discussion a while back about European vs. north American triumphs as to the presence of a catalytic converter in the header pipe. Supposedly the euro bikes have one. might want to look into it before making too many changes.
cheers
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Going for the 50's look...
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foglefar
Learned Hand
Reged: 03/09/05
Posts: 1972
Loc: Brisbane, Australia
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Quote:
Also, there was some discussion a while back about European vs. north American triumphs as to the presence of a catalytic converter in the header pipe. Supposedly the euro bikes have one. might want to look into it before making too many changes.
Very good point.
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Cheers, Richard
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09 America, Staintune Pipes, K&N, Breathe, Hagon Nitros, AI & O2 removed, tune 20184 (modified), MTX-L a/f gauge
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Keith
Stickman Yogi
Reged: 03/21/09
Posts: 11609
Loc: BC, Canada
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Quote:
All Our EFI Triumphs pop when decelerating ...
As do the carb Triumphs. Many of us carbie guys disconnected the TPS and THAT eliminated popping on decel. I doubt this bit of info helps with EFI owners but just thought I'd include it as part of this conversation.
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Live to love, love to live.
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paulypfr
Adjunct
Reged: 02/24/10
Posts: 245
Loc: Texas
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its a Triumph thing...i love it!
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