Grail Porsche 911 992 Turbo / S OMP (rear axle)

(rear axle)

Fully enclosed/sealed design ensuring only cold air is supplied to keep IATs low

Below is the dyno chart for the Stage 2 car

The finished product:

Grail Porsche 911 992 Turbo / S OMP (rear axle)Loud but Legal GRAIL flap exhaust systems with ECE type approval can be used on your EU vehicle without registration. They are made by hand in Germany from high quality L304 stainless steel and produce an unmistakable sound that will give you goosebumps the first time you start the engine. If you are driving an imported vehicle with an operating license, please find out before purchasing whether you need to have the exhaust system registered in your