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Paul M.
Does what it says
Bought this for my m340i and i absolutely love the cold starts, and driving with the valve open in comfort. It adds a deeper tone or grudge when the valves are open at lower rpm. Use it on the highway and i cannot tell i notice any drone. Would recommend.
BMW 3 Series (G20 / G21) Exhaust Controller
Andrew
Great product easy to install and makes a
Great product easy to install and makes a difference
