SSGUNNER
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- Joined
- Jun 10, 2021
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Great question, no so I removed the stock muffler and resonator along with the flapper valve and curved out my tip to the side. Went with dual tips 4” on the passenger side rear only on one side. The rest of the piping is all stock i believe it is 2.5. I know some folks like going with 3” piping for better flow but mine is just fine with me.Did you leave all the factory flaps and tips or do a Gm performance exhaust and replace muffler to the sport