You don't need tuning if you are running stock downpipes.
I ordered AA EL midpipe and Remus Sport axleback back in January. I got the AA EL a couple weeks later, but the Remus was on back order. Just the other day (3 months later), I get an email saying that Remus USA is no longer the distributor for Remus products and my order has been delayed indefinitely.
I ended up ordering an Akrapovic to pair with the AA EL, and hope that the sound is good enough.
My point... REMUS is not an option in the USA at this time. Don't bother.
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