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You will be fine running it with the silencers in. The restrictiveness of the silencers should be far less than the stock catback and plenty of people run that.
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2014 Scion FR-S Monogram
Raven
OFT Stage 2 UEL E85 | Tomei UEL Headers | Catless FP | Greddy Revolution RS Catback | HKS Air Filter | Toyota Badge Swap
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