Your original catalytic converter will typically have 400 or 600 Cells per square inch (CPSI)? these original cats are restrictive in their flow? typically allowing an open area of around 55-65%

Milltek Sport Hi-Flow Sports Cat which will be fully integrated into a large bore downpipe? has only 100-200 CPSI depending on application

These cats have an open area of between 75-85%? thus reducing back pressure substantially and increasing flow rates? all very desirable for extracting more performance? especially on Turbo-Charged engines.

• Emission levels are maintained at legal limits by careful selection of the volume of the metallic substrate.
• Lamda probe positions remain unchanged from the original equipment.
• Manufactured from 304 aircraft grade stainless steel.

This Milltek Kit Includes:

• MSFD223: Large Bore Downpipe & Hiflow Cat
• MSFD224: Connecting Pipe to Milltek Sport Cat Back

NOTES:

Large Bore Downpipe with 200 Cell High Flow Cat. Requires Stage 2 ECU Remap. For fitment to Milltek Sport Cat Back Only

TIP STYLE

76.2mm Tip

There?s no better place in the UK to supply you with your superb Milltek exhaust products than Milltek? we are literally a stone?s throw away from Milltek?s Head Quarters and factory in the centre of Derby.

FITMENT

Ford Focus Mk3 RS 2.3-litre EcoBoost 4wd 5-Door Hatchback 2016-2017