Audi S4 S5 Downpipe with 200 Cell Hi-Flow Sports Cat & Heat Shield B9 3.0 TFSI

MTC Motorsport Audi S4 S5 Stainless Steel Downpipe With Hi-Flow 200 Cell Sports Cat and Heat Shield

• The S4 downpipe is machined from T-304 high-grade stainless steel and is tig welded in house.
• Our downpipe comes straight from the turbo providing a sharper throttle response due to a faster spool of the turbo.
• It will provide noticeable power gains and a much more aggressive exhaust note which sounds amazing.
• It produces lower temperatures and less exhaust backpressure due to the relief of the turbocharger. The cylinder charge is increased which gives you maximum performance.
• Finished in brushed stainless (with heat shield)

These will fit the following models:

• Audi S4 B9
• Audi S5 B9

We have tested this product and found increases of around 20-25 bhp without tuning and 120bhp+ on a tuned car. Professional installation is recommended as some exhausts sit slightly different from others and can be tight.

If you have a later model car with OPF/PPF filters they will need coding out so you will need to find a tuning company who can do this.

These should pass an MOT emissions test when fitted. They are road legal and Euro 5 rated.