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Sportster Motorcycle Air intake, Carburetor, EFI, Fuel, and Exhaust Problems, advice and/or how tos for Sporster and Buell motorcycle carburators, Electronic Fuel Injection (EFI), Air Intake, Fuel and Exhaust.

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  #1  
Old 2nd April 2010
CAMJAG CAMJAG is offline
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Default Vance & Hines Straight Shot Slip on Removable Baffles

Hey guys I have a newb question for ya. I ordered a set of Vance & Hines Straight Shot slip ons for my 09 Nightster. The description says they have removable baffles. I was wondering if anyone is running these pipes with the baffles removed with out any tuning, and if it sounds good? This is my first bike and first mod
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Old 2nd April 2010
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aleson aleson is offline
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Originally Posted by CAMJAG View Post
Hey guys I have a newb question for ya. I ordered a set of Vance & Hines Straight Shot slip ons for my 09 Nightster. The description says they have removable baffles. I was wondering if anyone is running these pipes with the baffles removed with out any tuning, and if it sounds good? This is my first bike and first mod
I've got them with the quiet baffles, I think they are too loud withouth baffles. I would put them on with baffles and give a try if I were you
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Old 2nd April 2010
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Originally Posted by CAMJAG View Post
Hey guys I have a newb question for ya. I ordered a set of Vance & Hines Straight Shot slip ons for my 09 Nightster. The description says they have removable baffles. I was wondering if anyone is running these pipes with the baffles removed with out any tuning, and if it sounds good? This is my first bike and first mod
I'm pretty sure mine have the regular baffles in them, and they are plenty loud. As far as whether you'd need to tune without baffles, I don't know. I just know you don't want to loose all back pressure.
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Old 3rd April 2010
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You will need to put a air cleaner on and for best gains in hp reflash the computer/ECM or install a S/E super tuner or Power Commander

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Old 3rd April 2010
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without baffles they are LOUD! like almost too loud. The German police pulled me and threatened to impound it they were so loud. I run quiet baffles now and they are STILL loud enough.
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Old 3rd April 2010
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The standard baffles aren't much of a baffle at all. They are pretty freaking loud (for me) with the regular baffle. As Goovie said, even with the quite baffles, they are still pretty loud. Once you get them and look down them, you will see what I mean by not much of a baffle for the standard set.
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  #7  
Old 3rd April 2010
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Thanks guys. I put them on last night and kept the baffles in them. It is a good thing I did, they are loud. Now my bike sounds like a Harley. I don't know how much of a gain in HP/TQ numbers but I am impressed with how much harder the bike pulls now. I just thought it was going to add some noise but it moves much better.
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Old 4th April 2010
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As with almost any drag pipe your gonna loose bottom-end. You can do the "lollipop" mod, or if your really concerned with performance use a 2:1 system. Like the old road racing GP bikes like the CR750, 4 into 4 unbaffled gives you better top-end performance, but you loose the "Street" powerband. so unless you go EVERYWHERE at WOT, you wont notice a huge increase. I love mine though, if I was after all-out performance I would ride one of my other bikes. They look the business, and sound great.
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Old 4th April 2010
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With no baffles they are straight through. Drag pipes. Excessively loud. Not good for the engine.
I have a set on mine with the regular baffles. Still not the sound I wanted, so I put another set of the baffles that have triangles stamped into them and folded in over one edge... along with and inside the standard baffles. Deep rumble, good back pressure and loads of power. I could feel the difference in the way the engine pulls now as compared to with just the standard baffles.
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Old 4th April 2010
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Originally Posted by 2006xl1200 View Post
You will need to put a air cleaner on and for best gains in hp reflash the computer/ECM or install a S/E super tuner or Power Commander

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