【AS】High Flow Catalytic Downpipe

A 304 stainless sports cat downpipe. A high flow metal catalyst drops back pressure and sharpens turbo response without going fully de-cat.

To meet emissions rules the standard downpipe runs a dense honeycomb catalyst. It cleans up the exhaust well, but it restricts flow at the same time, and that back pressure costs you turbo output.

The AutoScience Studio sports cat downpipe keeps a high flow metal catalyst while cutting exhaust back pressure right down. The turbo builds boost sooner, throttle response sharpens and mid range torque improves, and you keep useful exhaust filtration.

▌ Specification
- Material: 304 stainless steel
- Catalyst: high flow metal core
- Direct fit, bolt on, no fabrication

▌ Features
- High flow catalyst, so you keep emissions control and gain performance
- Cuts exhaust back pressure right down
- 304 stainless steel, resists heat and corrosion
- Direct replacement for the standard downpipe, bolts straight up
- Better exhaust note, turbo dump noise comes through more clearly

▌ Compared with standard
- Back pressure far below the standard dense honeycomb catalyst, so the turbo builds boost sooner
- Unlike a de-cat it keeps exhaust filtration, which makes it the better choice for a road car

Fitment: Ford Focus 2.3 ST. Fitting available at our workshop.