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Drilling Holes in Stock Exhaust: Any Advantages? (Read 130 times)

jgrandmont

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Drilling Holes in Stock Exhaust: Any Advantages?
04/12/14 at 10:25:41

I'm thinking of drilling holes in the stock exhaust of my '09. Would there be any advantages performance-wise in doing so? If so, where should the holes be located? On the outer end? Or would it be better to drill out the center of the pipe. To be clear, I'm not really looking to make the bike louder. I'm also not looking to have to modify the engine.

'09 Suzuki Boulevard S40

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Kris01 Serious Thumper Offline Eat, sleep, RIDE! Posts: 3767 Tennessee Gender:	Re: Drilling Holes in Stock Exhaust: Any Advantage Reply #1 - 04/12/14 at 10:55:13 Drill several very small holes in the back or the muffler or better yet, get a Dyna. Either way, you'll have to rejet.
Back to top	There's no problem that a full tank of gas and a sunny day can't fix! 2008 S40, Rotella T 15W-40 w/ZDDP added, Dyna, 140/90-15, Battery Tender Jr., Seat lift, #52.5/150/3 washers, Raptor IP Logged

Kris01 Serious Thumper Offline Eat, sleep, RIDE! Posts: 3767 Tennessee Gender:	Re: Drilling Holes in Stock Exhaust: Any Advantage Reply #2 - 04/12/14 at 10:58:15 Try googling Hartman mod
Back to top	There's no problem that a full tank of gas and a sunny day can't fix! 2008 S40, Rotella T 15W-40 w/ZDDP added, Dyna, 140/90-15, Battery Tender Jr., Seat lift, #52.5/150/3 washers, Raptor IP Logged

justin_o_guy2

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Re: Drilling Holes in Stock Exhaust: Any Advantage
Reply #3 - 04/12/14 at 11:05:20

Drilling the stock muffler has been done & some have been happy with the results. I dont understand putting the time & effort into that muffler when a good looking , known performance booster is available for $20.00. A Dyna weighs less ( instant acceleration boost) looks ever so much nicer & has a nice sound. AND, IF the law ever requires a stock exhaust to get your inspection sticker, youll have one to slap on,
Tuning the carb to a Dyna is a known quantity, people here can help. Drilling holes = an unknown.,.You MITE nail it, mite not,, If youve got a bike that backfires now, just wait till ya drill it out,,

The people never give up their liberties but under some delusion.- Edmund Burke.

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WD Serious Thumper 2005 No Login Offline Professional "scooter trash". Posts: 5207 Rosemark TN Gender:	Re: Drilling Holes in Stock Exhaust: Any Advantage Reply #4 - 04/12/14 at 11:09:33 http://jonline.org/savage/Tips___How-to_s/Hartman_Muffler_Mod_Details/hartman... Link still works. Have fun. That mod is older than this forum, came out on the old forum (Bert's) from Germany.
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jgrandmont YaBB Newbies Offline Posts: 39 Buzzards Bay, MA Gender:	Re: Drilling Holes in Stock Exhaust: Any Advantage Reply #5 - 04/12/14 at 11:36:40 Thanks, guys.
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old_rider Serious Thumper Offline Backyard Bill Productions Posts: 3147 flordia panhandle Gender:	Re: Drilling Holes in Stock Exhaust: Any Advantage Reply #6 - 04/12/14 at 18:42:57 I've put Dyna mufflers on both savages and all I had to do was the washer mod and adj. the air mix screw, no rejeting needed. I bought both mufflers together on E-bay for 38.88 and 10 bucks shipping.
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oldNslow Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 2683 Rochester, NY Gender:	Re: Drilling Holes in Stock Exhaust: Any Advantage Reply #7 - 04/13/14 at 07:16:21 My bike came to me with two appx 1/2 inch holes drilled in the plate at the back of the muffler on either side of the original outlet. The only thing that does it make it a little louder. I has no discernible effect on performance.
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ToesNose Serious Thumper Offline Pardon me, do you have Hot Sauce? Posts: 1993 Mooresville, NC Gender:	Re: Drilling Holes in Stock Exhaust: Any Advantage Reply #8 - 04/13/14 at 19:16:52 Get a Dyna muffler, they are cheap, sound great on the LS650 and will shed a few pounds
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