No problems. The short pipes don't have a cat (as others have already said) and will flow more freely, so you may need to re-map to the TORs map. This is available from your dealer at a fee (probably) or for free using TuneECU.

Cheers, Richard
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09 America, Staintune Pipes, K&N, Breathe, Hagon Nitros, AI & O2 removed, tune 20184 (modified), MTX-L a/f gauge