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Discussion Starter · #1 ·
Has anyone removed cat , welded cross over shut and drilled out plugs in muffler to make there own 2 into 1 haven’t read or heard of it but thinking of doing it . Stock air no tuner .
 

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You can do it but I would think it would be restrictive. You are going to increase back pressure and throttle response. If performance is not a concern go for it. The difference is not going to be terribly significant unless you are doing a roll on with a bike with a real 2 into 1.
 
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