I am set to run at Laguna Seca on a 103db day and I'm wondering if I should purchase some plates with 3/4" or 1/2" holes or if I can just run without any plates since I don't have any? The exhaust is stock, just with the sides open.
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You'll be ok without the plates for a 103 db day. If running a 90 db day run the 1/2". Thanks for your order. You'll have them Sat or Mon as I'm in NorCal.