Rick Cappell Posted 8January, 2021 Report Share Posted 8January, 2021 If a Sharkwerks exhaust rear box and rear valve plugs is installed to a 991.2 GT3, would this void manufacturers warranty? Quote Link to comment Share on other sites More sharing options...
1q2w3e4r Posted 8January, 2021 Report Share Posted 8January, 2021 I don't believe so, as long as the factory cats remain. Best bet is to ring Porsche and ask. Quote Link to comment Share on other sites More sharing options...
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