HELP! Flowmaster DBX Size and other Exhaust Advice!

cmnuwin

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First Name
Charlie
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Sep 25, 2018
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Location
Santa Clara, CA
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Honda Civic Hatchback EX 2017
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Hi! I drive a Civic Hatchback EX and I've decided that it makes more sense for me to attempt a custom exhaust SO I was looking into sound and have decided I'm probably going to go for a resonator replacement with the Flowmaster DBX and a straight pipe to the center outlet where it'll come out as a dual-outlet exhaust (kinda like the Sport Models but I have an EX so I'll need to start low and curl the piping back up to circumvent the spare tire).

Mostly doing this because I like the way the center outlet exhaust looks so I bought a Type-R-esque diffuser, only to realize that the spare tire means that finding a name-brand center outlet exhaust will likely be hard, especially locally (I know about that Thai Prodrager brand and am kinda going for that with the DBX lolz)

Anyway, I'm having trouble finding out what size for the DBX to get, I've seen people get 2.25 and 2.5 so please let me know the differences/what works and any other exhaust advice you have would be awesome!
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