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Drilling Hole in muffler

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Old Mar 5, 2013 | 04:00 PM
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Default Drilling Hole in muffler
I have a 2006 Sporty and its all stock. I know that knocking out the baffles would affect the back pressure. Would drilling holes into the muffler affect the pressure?
 
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Old Mar 5, 2013 | 09:58 PM
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that would be the worse thing to do. Drilling a hole will allow cold fresh air in the pipes causing pops and worse bent valves. pops are caused by hot unused fuel meeting with fresh air in the exhaust and igniting flowing backward and burning up exhaust valves and screwing up the flow of exhaust. believe it or not there is a formula for how long an exhaust should be for best performance at given RPM. but you have to go back to basic engine building to know that. Nobody ever goes back to basics
 
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Old Mar 6, 2013 | 10:42 AM
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Default Drilling holes in muffler
Originally Posted by aquadave
that would be the worse thing to do. Drilling a hole will allow cold fresh air in the pipes causing pops and worse bent valves. pops are caused by hot unused fuel meeting with fresh air in the exhaust and igniting flowing backward and burning up exhaust valves and screwing up the flow of exhaust. believe it or not there is a formula for how long an exhaust should be for best performance at given RPM. but you have to go back to basic engine building to know that. Nobody ever goes back to basics


So what do you recommend I do? I'm tight on budget so buying a stage 1 kit and new muffler would be out of the question for awhile....what other possible ways are there to make the bike a little louder? and thank you for your reply!!!
 
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Old Mar 6, 2013 | 10:47 AM
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It only works if you live in a trailer.
 
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Old Mar 6, 2013 | 11:16 AM
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What about torque cones, can he pull the baffles and use them? Not sure what they do.
 
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Old Mar 6, 2013 | 11:39 AM
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Use the search feature and search torque cones. There are some interesting threads
 
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Old Mar 6, 2013 | 11:47 AM
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Sweet, I will search that right now. What kind of scoot you got?



Originally Posted by Dangermouse
Use the search feature and search torque cones. There are some interesting threads
 
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Old Mar 6, 2013 | 11:49 AM
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I have a 1999 Electra and my old lady has a wideglide
 
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Old Mar 6, 2013 | 11:50 AM
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I drilled mine out 3 years ago, 1" drill, one of the best things I'd done, added torque cones and adjusted air mixture. Runs like a scalded Hog...sure sounds better..
 
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Old Mar 6, 2013 | 11:52 AM
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You can find torque cones. On. Ebay relatively cheap
 
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