Airtec Motorsport De-cat Downpipe for Focus St250 Option(S):Mk3 Focus ST250 and there's a significant amount

and there's a significant amount of performance locked away in the ECU

the comprehensive kit is a direct replacement and comes with new Pro Hoses silicone boost pipes

Road tests found the standard intercooler was heat soaking (unable to cool the intake temps from turbo) and temperatures rising to 69 degrees which causes the ecu to pull timing out of the map and means a drop in bhp

and bore diameters are carefully enlarged over stock to ensure ultimate performance without the loss of mid-range torque

this kit is specifically designed to suit the turbocharged 2

Airtec Motorsport De-cat Downpipe for Focus St250 Option(S):Mk3 Focus ST250 and there's a significant amountTECHNICAL DATA AIRTEC Motorsport downpipe de cat for Focus MK3 ST250 The Original Catalyst and down pipe , unlike the older ST225 and Focus RS mk2, are made in one piece. This new design features some restrictive bends and an exit bore size of only 70mm. With a new bore size of 70mm the new AS performance Replacement Down Pipe has over 50% more capacity. This part is sold for motorsport and off road use only and will NOT be able to pass a UK MOT