I took my back box off earlier as I couldn't see what mate it was while it was on the car and it's a nur spec lol I've got a 100cell sports cat a prodrive center section and the nur spec back box it is loud but not stupidly loud would it be worth me fitting a full system with a decat or am I better off staying with the sports cat I've got fitted and getting a cat back system mine does drone on the motorways that's the only reason I wanna change it really ??
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