kpd12
Senior Member
I've been sitting on a replacement muffler for a while to replace my flowmaster 3" in 2.5" out dual muffler. Currently the tube from the cat is 2.5" to the flowmaster. Should I replace the 2.5" pipe with 3" from the cat to the muffler or leave it 2.5"? Would there be any benefit to increasing that pipe size?
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