Following the same successful recipe CP-E used for their MS6 downpipe, their new MS3 downpipe replaces the choked factory pipe and its two restrictive cats, with one high-flow cat and a 3-inch mandrel bend pipe. The catalytic converter features a high-flow, all metallic honeycomb design, making it one of the most durable converters on the market.
The result of the efforts are reduced backpressure, decreased turbo spool time, increased horsepower and a more aggressive sound. For an even greater dose of the same great sound and power, option out the downpipe without a catalytic converter ( for off-road use only). NO CEL (check engine light) with high flow cat. installed!!

For downpipes without a cat, CP-E will be releasing their CEL fix.
Although more power and great sound are high priority items when buying a 3-inch downpipe, the fine details are what ensure that the product will satisfy the end-user for a lifetime.
CP-E does not use mild 'junk' steel or even cut and welded intermediate bends on this pipe. Their downpipe is crafted from premium 'Bright annealed' 304 stainless steel and is mandrel bent throughout for less turbulent exhaust flow. The flanges are 3/8-inch thick laser cut 304 stainless steel and critical portions of the pipe for high strength and durability. Critical portions of the pipe are TIG welded.
TIG welds are usually avoided in this industry because they require more time and skill than a MIG weld, despite the fact that TIG welds are better suited for thin metals, are better looking, and create a more durable bond.
CP-E held nothing back with this product. A great vehicle requires great products!

When paired with the new CP-E cat back exhaust system, the full CP-E turbo back system on a MS3 gained about 30 horsepower and 40 lb/ft of torque to the wheels compared to the stock system.
There is more to the graphs than just the 'peak gains'. The mid-range is greatly enhanced, and you will notice how much quicker the power comes on with the CP-E turbo back installed.