The Roadstersport Helmholtz Resonator reduces frequencies of 120-130hz by 48+db! With option for ultra flow FIVE inch converter(for boosted or 2.5 swapped cars) or the standard 4 inch converter (great fit for 2.0 cars). Five inch fits manual transmission only.
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1 Review
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Roadstersport Helmholtz Midpipe with converter
I bought this midpipe along with a Roadstersport header and Super Q. Fitment was perfect. I've seen online how it supposed to be difficult with one person to install but it was easier than expected. It clears the crossbraces and rear end with space to spare. Came unpolished like they all do now but it still made from stainless. Had all hardware needed and rear axle back gasket.
