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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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View Poll Results: what do you run
stock 269 16.46%
stock with punched out mufflers 141 8.63%
slip ons with baffles 409 25.03%
slip ons without baffles 115 7.04%
aftermarket with baffles 370 22.64%
aftermarket without baffles 295 18.05%
stock with gronk mod baffles 35 2.14%
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  #371  
Old 26th September 2017
60Gunner's Avatar
60Gunner 60Gunner is offline
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Drag pipes with khrome werks hp baffles. Toying with the idea of cutting them in half.
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  #372  
Old 12th May 2018
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Jheitt Jheitt is offline
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I went from drag pipes to a 2-1 and what a stinking difference. Baffles for life now

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  #373  
Old 6th July 2018
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Paucgho with baffles. Had 40 inch open drags. Added Krome werks baffles. Failed inspection. Went to the Paucgho. doesn't take long to swap back and forth.
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  #374  
Old 12th July 2018
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I run the stock exhaust on my 883 and love the sound. I bought my 1200 with 2" straight pipes and am in the process of making baffles with 2 diversion plugs... they're just obnoxiously loud and I want to help correct some of the drag pipe sag until I can weld up a good 2-1 system.
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  #375  
Old 12th July 2018
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i'm running an open 2-1 on older V&H headers with a straight stainless tube. looking into getting something new this year. can't decide atm between cone engineering 2-1 deconstructed kit or the ryca box. leaning more towards the cone.
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  #376  
Old 13th July 2018
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went from open bassani's to a 2-1 supertrapp, performance was night and day but i miss the sound
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  #377  
Old 18th November 2018
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I installed the Cobra HP 2 into 1 and really like how they perform and sound.
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  #378  
Old 4th December 2018
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Ceramic coated Thunder Header, no heat shields.
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  #379  
Old 5th December 2018
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2004 1200 conversion Custom.
Stock exhaust.

How much HP and Torque will I lose if I cut the taper and just remove the baffles?
Probably a waste of time and effort, but sure is cheap.

I'm beginning to like the torque the 1200cc conversion adds, seems a waste to remove the baffles and there-by, neuter the conversion.

Just how restrictive are the stock pipes anyways?

My 1200cc Breathes fine, even over 5000 rpms with the stock exhaust and stock cams.
Cannot be too restrictive from 3,000 to 4000 rpms, can it?

It would breathe even easier if I had left it an 883. (Less intake and exhaust with every stroke)

I realize you can hear and even perceive an increase when you install 2 into one headers, but, for normal cruising and everyday traffic, HP and torque will be close to the same without the added cost of installing and tuning.

Not quite sold on the need for excessive volume.
Some pipes do sound nice though.
Some are pleasing to the ear.

Stock is a bit on the quiet side, but when you apply the torque of the engine, you don't want to broadcast your infraction over five city blocks, do you?

I just want the car in front of me to know my intentions and for him to put down his cell phone.
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  #380  
Old 11th January 2019
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When a year ago the dealer was trying to convince me to send a green light to a 1200 conversion (that with the SE heads, midrange cams, and the throttle body of 58 mm)... he said that i could even keep the stock cat mufflers without concern if i disliked the louder noise, but that i would have lost from 5 to 10 hp...

P.S.
i said to him that IMHO open a new engine who sounds like an harp... is to me worse than a blasphemy...
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Last edited by Nibelungen; 11th January 2019 at 18:59..
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