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A little observation: I noticed it's a tad boomy under load at 2k RPM. The single delete was not like this. I suspect it's some resonance caused by the added length of pipe. I'm thinking it will tone down a bit as some carbon coats the pipes. I'll keep you all posted.
Oh and FYI, nothing illegal about a muffler delete. If it's past the DB limit they can get ya, but you don't have to have ANY pipes after the cat if you don't want.
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