Porsche 997.1 SpeedTech X-cellerator Performance Exhaust Suspension Is additional tuning required

Is additional tuning required

Recommended for track and off-road use only not legal in California

after initial heat cycle

Don't waste time with rear mufflers since these are valved and bypass any restriction

NOTE: If turbo cores are available

Porsche 997.1 SpeedTech X-cellerator Performance Exhaust Suspension Is additional tuning requiredThe Speed Technologies 997. 1 exhaust system is designed to offer the discerning Porsche enthusiast the ultimate exhaust system with a number of performance and sound options. Our exhausts provide a louder, deeper tone, improved throttle response and increased HP, as compared to the OEM Porsche exhaust. All systems are constructed with T304 stainless steel and fitment is perfect. High quality welds, low restriction straight thru design and a mirror