We had a highly strung new shape imprezza in recently that had modified and tweaked to within an inch of it’s life. The only problem was that it’s very expensive stainless exhaust was now a bit too loud. Rather than build a complete new system we designed and built a special slim line box with high temperature wadding to sit in the centre of the exhaust. The performance remains the same but the owner can get off his drive in the morning without the neighbours complaining.