The factory 911TT/996TT diverter valves are prone to premature failure. Upgrade to the high performance units proven in the Bisimoto 609HP, which fit in the factory location, with factory clamps.
Faster reaction than the original units, and much more robust. Ideal for setups up to 900hp, and compliant with factory MAF sensors. Price as each, and each engine requires two (2) units.
Free shipping within the continental USA.