I am very interested. Are you still looking for another volunteer? I would like to participate...and I have a ESS Stage 1 supercharger installed. I like the fact that you have options to offer the various segments to attach to the OEM system. It the hp gain is what you expect I would consider the header back prototype. Otherwise, I am a little leery of anything but a Cat back system.
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'06 Z4 ///M Roadster: Silver Gray Metallic; Gray soft top. Zeckhausen CDV. ESS VT1 445 Supercharger. APEX ARC8's. Dunlap Direzza Star Spec's. Strong Struts. Royal Purple. RPI Exhaust w/ DKF hangers.
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