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tutu
12-12-2009, 01:29 PM
I got Universal IDS pipes for my sportster XL1200R 2005.
In the tuning guide its is said that 4 discs is the minimum to use with closed end cap.
What is the minimum with opened end cap?

Best regards

bschultz
12-14-2009, 07:11 AM
The 3" open end-cap flows for 6-7 discs, so zero.