Good to see they are jumpin on board.
The APR one is 3" witha single high flow cat.
The TT one is a 2.5" with 2 cat's (required for the newer models apparently.)
Not sure if you can run an off the shelf tune with the TT one (due to it's smaller diameter) or how much of a difference it will make as the stock piping is 2.5" anyway from memory.
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