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post #1 of 7 (permalink) Old 05-23-2019, 02:02 PM Thread Starter
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Main Motorcycle: '09 Triumph Speedmaster
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Louder pipes

My'09 Speedmaster needs to be heard! According to questionable YouTube entries,I can just drill a 1/2" hole in the baffles(?).Is this a reliable answer or should I add some 16" slash-cut slip-ons? Will either method make it necessary to revamp the fuel injectors? Thanks!
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post #2 of 7 (permalink) Old 05-23-2019, 03:07 PM
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Yes, you can drill into the baffles, pound in a pointy rod or any number of other ways to break up a small amount of the very restrictive baffling inside the OEM mufflers. But, you would be much better off simply replacing them with some aftermarket mufflers and storing the originals to use if you resell the motorcycle later. While there were few (and are even less now) aftermarket choices specifically for the America/Speedmaster models the 1&3/4" header is very a common header pipe size. With a little basic bracket fabrication most any "cruiser" style muffler can be used.

Yes, any increase in exhaust flow will call for a remap of the ECU. The base map is on the lean side for global emissions standards and allowing more air flow out of the motor will need a corresponding fueling change to maintain a reasonable air/fuel ratio or you may be running very lean. Triumph has a TOR/aftermarket fuel map for most of the model years for freer flowing mufflers. And if you are a DIY type look into the TuneECU software that will allow you perform diagnostic work as well as load the TOR or otherwise modified fuel maps. And if other upgrades may follow check out Triumph Twin Power for good info and fuel maps for a variety of configurations.

2009 America with some modifications, a lot of fun that I can ride all day. (sold and miss my 2008 Bonneville, a great daily driver)
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post #3 of 7 (permalink) Old 05-24-2019, 01:42 AM Thread Starter
Production 125
Main Motorcycle: '09 Triumph Speedmaster
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Location: Polk City,Iowa...just N. of Des Moines
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Thumbs up RE:louder pipes

Thank you Matte Mo! Very informative.
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post #4 of 7 (permalink) Old 05-30-2019, 02:16 AM
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I'm not sure if the rules are different in the USA but does it effect your insurance if you swap out the pipes for aftermarket slip-ons?
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post #5 of 7 (permalink) Old 05-30-2019, 07:52 AM
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Quote:
Originally Posted by Arnie1 View Post
I'm not sure if the rules are different in the USA but does it effect your insurance if you swap out the pipes for aftermarket slip-ons?
No, it will not.
But if involved in a repair claim the mufflers will likely be replaced with OEM unless you had added them (the aftermarket mufflers) for additional coverage (and additional cost) to the insurance policy. And of course, very few aftermarket mufflers are DOT or emissions certified and would not be covered for on road use. I know of no one who has ever considered contacting the insurance company after making this type of modification for coverage.

2009 America with some modifications, a lot of fun that I can ride all day. (sold and miss my 2008 Bonneville, a great daily driver)
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Last edited by MattyMo; 05-30-2019 at 08:59 AM. Reason: added thoughts
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post #6 of 7 (permalink) Old 06-16-2019, 05:00 PM
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Jim - I have a pair of modified TORs that I got from a friend and you can have them for the cost of shipping. After installation I removed the AI system, O2 sensors and installed a TuneECU remap. Engine ran better than ever! They are a good way to evaluate the added sound. If you would like them, send me a PM with your address and I can let you know what shipping costs.

Jupiter Bob
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post #7 of 7 (permalink) Old 06-19-2019, 01:29 AM Thread Starter
Production 125
Main Motorcycle: '09 Triumph Speedmaster
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Join Date: May 2019
Location: Polk City,Iowa...just N. of Des Moines
Posts: 7
Other Motorcycle: '04 Victory V92TC
Extra Motorcycle: '99 Moto-Guzzi Bassa
Smile TORs

Quote:
Originally Posted by rwm33418 View Post
Jim - I have a pair of modified TORs that I got from a friend and you can have them for the cost of shipping. After installation I removed the AI system, O2 sensors and installed a TuneECU remap. Engine ran better than ever! They are a good way to evaluate the added sound. If you would like them, send me a PM with your address and I can let you know what shipping costs.
That would be awesome...Thanks! I'm @ 345 Juliana Ct.,Polk City,Ia.50226
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