IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
    IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
    IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
    IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
    IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
    IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
    IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
    IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
    IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
    IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
    IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
    IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
    IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
    IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
    IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
    IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
    IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
    IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
    IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
    IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
    IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
    IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
    IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance
IE Performance Cast Downpipe For Audi B9/B9.5 S4 & S5 3.0T - Wayside Performance

IE Performance Cast Sports Cat Downpipe For Audi B9/B9.5 S4 & S5 3.0T

Regular price
£1,149.99
Sale price
£1,149.99
Regular price
All non-stock IE items have a delay of 5-7 working days until despatch. Please contact us for stock levels Engineered as ...  Read more
All non-stock IE items have a delay of 5-7 working days until despatch. Please contact us for stock levels

Engineered as the ultimate downpipe solution for your Audi B9/B9.5 S4 or S5, every detail is maximized to provide the turbo and engine with a completely unrestricted exhaust flow path for up to 45HP & 41TQ (on hybrid turbo setup). The TIG-welded 304 stainless and investment cast body delivers addictive sound, quality finish, effortless install, reliability, and maximized performance for your turbocharged V6.

HIGH-QUALITY
CAST BODY

DOWNPIPE

PERFORMANCE
200 CPSI

CATALYTIC CONVERTER

MAXIMIZED FOR
HYBRID & STOCK

TURBOCHARGERS

DESIGN

LEADING FEATURES

  • Required to support hybrid turbo ECU calibrations
  • High-flow design to support full-bolt on stage 2 power capabilities
  • Removes any downpipe restrictions for full available power
  • Increases exhaust sound with improved engine & turbo notes
  • Improves turbocharger efficiency & speeds up turbo spool
  • Thick-wall casting reduces radiant heat in the engine bay
  • 200 CPSI performance high-flow catalytic converter
  • 304 investment cast downpipe body
  • 304 stainless steel downpipe legs & CAT
  • Massive 6" downpipe body to dual 2.5" downpipe legs
  • Hand TIG-welded for superior reliability and surface finish
  • Direct bolt-in factory replacement
  • CNC machined v-band and bolt flanges for leak-free operation
  • Installs to the stock exhaust or IE Midpipes upgrade

*Requires Stage 2 or hybrid turbo ECU tuning


MOTORSPORT SOUND

IE's unique thick-wall investment castings produce an aggressive, drone-free exhaust note without the "tinny" sound typical on most full stainless body aftermarket options. Enjoy not only a louder exhaust but one with improved engine and turbo notes that will deliver miles of smiles.


INVESTMENT CASTING

Other aftermarket downpipes use large sections of thin-wall steel tubing to manufacture the downpipe body; this is a cheaper process but can reduce sound quality and sacrifice exhaust flow. Investment casting allows for an optimized design that smoothly transitions exhaust flow from the massive 6" body to the dual 2.5" exhaust legs. The casting also provides a beautiful look that turns the entire downpipe into an attractive gold finish as it wears in from heat cycles over time.

PERFECT FIT

The B9 3.0T hot-v style engine has a unique center-mounted turbo with a large downpipe that quickly splits into twin-sided exhaust sections. This challenging configuration requires exacting alignment to avoid install hassles, rattling, rubbing, and exhaust leaks. IE engineers utilize advanced 3D scanning technology and rapid prototyping to guarantee a flow-maximized design that exceeds even the factory fitment.

200 CPSI CATALYTIC CONVERTER

IE's downpipe includes a high-flow 200 CPSI catalytic converter. This performance CAT allows for full and unrestricted power from Stage 2 ECU tunes and hybrid turbo upgrades while reducing emissions output and eliminating unwanted smells and bumper stains found on cat-less designs.

Catalytic converter warranty is only available for cusotmers running IE performance ECU software.

HYBRID TURBO READY

The stock downpipe becomes a significant restriction when upgrading to a larger hybrid turbo. IE's cast downpipe is a direct-fit to available upgraded turbochargers on the market and will allow total horsepower, torque, and spool potential from your turbocharger investment.

IE's B9/B9.5 S4 & S5 intake system, turbo inlet pipe, and downpipe are hybrid optimized, making the installation of popular turbo upgrades an easy bolt-in process.

PERFORMANCE

DYNO TESTING

Real-world power numbers are achieved using our in-house dyno cells to verify the efficiency of the downpipe design. Dyno testing performed in controlled conditions on a hybrid turbo equipped B9 S4 resulted in consistent and significant power gains of 45HP & 41FT-LBS to the wheels!

GAINS CHART

The following chart details the power gains (WHP & WTQ) over the baseline power numbers taken from the stock downpipe on our hybrid turbo development S4. The "0" baseline is the maximum power/torque made, and each following increment is the additional power gained from the IE downpipe upgrade.

The above power gains are a result of various design details:

The 6" 200 CPSI racing CAT improves exhaust flow.

The increased size of the downpipe body and smooth transition into the midpipes quickly evacuates exhaust gases away from the turbine wheel, improving turbocharger speed and efficiency.

The thick-wall investment cast body reduces radiant heat keeping the engine bay and charge air cooler.

Quantity: 1
Stock order
We receive stock orders from IE USA twice per month. Please allow up to 3 weeks for delivery.
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14 day returns
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All non-stock IE items have a delay of 5-7 working days until despatch. Please contact us for stock levels

Engineered as the ultimate downpipe solution for your Audi B9/B9.5 S4 or S5, every detail is maximized to provide the turbo and engine with a completely unrestricted exhaust flow path for up to 45HP & 41TQ (on hybrid turbo setup). The TIG-welded 304 stainless and investment cast body delivers addictive sound, quality finish, effortless install, reliability, and maximized performance for your turbocharged V6.

HIGH-QUALITY
CAST BODY

DOWNPIPE

PERFORMANCE
200 CPSI

CATALYTIC CONVERTER

MAXIMIZED FOR
HYBRID & STOCK

TURBOCHARGERS

DESIGN

LEADING FEATURES

  • Required to support hybrid turbo ECU calibrations
  • High-flow design to support full-bolt on stage 2 power capabilities
  • Removes any downpipe restrictions for full available power
  • Increases exhaust sound with improved engine & turbo notes
  • Improves turbocharger efficiency & speeds up turbo spool
  • Thick-wall casting reduces radiant heat in the engine bay
  • 200 CPSI performance high-flow catalytic converter
  • 304 investment cast downpipe body
  • 304 stainless steel downpipe legs & CAT
  • Massive 6" downpipe body to dual 2.5" downpipe legs
  • Hand TIG-welded for superior reliability and surface finish
  • Direct bolt-in factory replacement
  • CNC machined v-band and bolt flanges for leak-free operation
  • Installs to the stock exhaust or IE Midpipes upgrade

*Requires Stage 2 or hybrid turbo ECU tuning


MOTORSPORT SOUND

IE's unique thick-wall investment castings produce an aggressive, drone-free exhaust note without the "tinny" sound typical on most full stainless body aftermarket options. Enjoy not only a louder exhaust but one with improved engine and turbo notes that will deliver miles of smiles.


INVESTMENT CASTING

Other aftermarket downpipes use large sections of thin-wall steel tubing to manufacture the downpipe body; this is a cheaper process but can reduce sound quality and sacrifice exhaust flow. Investment casting allows for an optimized design that smoothly transitions exhaust flow from the massive 6" body to the dual 2.5" exhaust legs. The casting also provides a beautiful look that turns the entire downpipe into an attractive gold finish as it wears in from heat cycles over time.

PERFECT FIT

The B9 3.0T hot-v style engine has a unique center-mounted turbo with a large downpipe that quickly splits into twin-sided exhaust sections. This challenging configuration requires exacting alignment to avoid install hassles, rattling, rubbing, and exhaust leaks. IE engineers utilize advanced 3D scanning technology and rapid prototyping to guarantee a flow-maximized design that exceeds even the factory fitment.

200 CPSI CATALYTIC CONVERTER

IE's downpipe includes a high-flow 200 CPSI catalytic converter. This performance CAT allows for full and unrestricted power from Stage 2 ECU tunes and hybrid turbo upgrades while reducing emissions output and eliminating unwanted smells and bumper stains found on cat-less designs.

Catalytic converter warranty is only available for cusotmers running IE performance ECU software.

HYBRID TURBO READY

The stock downpipe becomes a significant restriction when upgrading to a larger hybrid turbo. IE's cast downpipe is a direct-fit to available upgraded turbochargers on the market and will allow total horsepower, torque, and spool potential from your turbocharger investment.

IE's B9/B9.5 S4 & S5 intake system, turbo inlet pipe, and downpipe are hybrid optimized, making the installation of popular turbo upgrades an easy bolt-in process.

PERFORMANCE

DYNO TESTING

Real-world power numbers are achieved using our in-house dyno cells to verify the efficiency of the downpipe design. Dyno testing performed in controlled conditions on a hybrid turbo equipped B9 S4 resulted in consistent and significant power gains of 45HP & 41FT-LBS to the wheels!

GAINS CHART

The following chart details the power gains (WHP & WTQ) over the baseline power numbers taken from the stock downpipe on our hybrid turbo development S4. The "0" baseline is the maximum power/torque made, and each following increment is the additional power gained from the IE downpipe upgrade.

The above power gains are a result of various design details:

The 6" 200 CPSI racing CAT improves exhaust flow.

The increased size of the downpipe body and smooth transition into the midpipes quickly evacuates exhaust gases away from the turbine wheel, improving turbocharger speed and efficiency.

The thick-wall investment cast body reduces radiant heat keeping the engine bay and charge air cooler.

We keep a large inventory of stock at our warehouse however due to widespread delays in the industry, some items may be on backorder. If you need parts ASAP then please contact us on the live chat or at support@wayside-performance.co.uk and a member of our team will get back to you.

Unsure on fitment? Just drop us a message on the live chat or support@wayside-performance.co.uk and a member of our team will assist. Please make sure to include as much detail as possible including make, model, registration and the parts you are looking at.

WAYSIDE PERFORMANCE

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