If you are looking to make more horsepower, and have a faster spooling turbo, then this is a good mod for you.
MPx Budget Stainless Steel downpipe without cat for the 2013-2018 Focus ST.
Bolts right to the OEM turbo, and has the OEM outlet location.
1/2 inch thick exhaust mounting flange
4 inch length turbo flex pipe to allow engine/downpipe movement
Extra o2 sensor boss installed near the turbo outlet for air/fuel mixture ratio gauge oxygen sensor!
Uses factory hanger, and factory V band exhaust clamps.
Downstream oxygen sensor has a defouler built in to prevent check engine lights