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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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  #21  
Old 5th June 2019
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hey ditch remember to post some pics when you get a chance
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  #22  
Old 5th June 2019
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That is correct on the caps and disc’s
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  #23  
Old 5th June 2019
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Quote:
Originally Posted by robbie202 View Post
@mike you are running open end cap and 20 disks.
the video on the supertrapp website says for the 4 inch "open end cap flows for about 10-12 discs"

does that mean that if you were running say 20 discs with the closed cap that you could use the open cap instead and run 8-10? am i understanding this correctly?
Yup. Like paul said above you are correct on that. 1 open ended end cap is equivalent to 8-10 disks so according to Supertrapp my pipe should perform the same way as it does now with 20 disks and the open end cap as it would with 28-30 discs and a closed end cap.

There is even an adjustable end cap that you can open and close to make more adjustments with.
https://catalog.zodiac.nl/en/catalog...rapp-mufflers/

https://shop.thunderbike.de/en/Thund...ff-Or-Not.html

https://www.baronscustom.com/catalog...682/index.html
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