Unleash Your RS3's Performance with Aftermarket Midpipes

Understanding RS3 Midpipes and Their Role in Performance

For RS3 owners seeking more power and an aggressive exhaust note from their compact performance sedan, installing an aftermarket midpipe is one popular modification. Audi's 2.5L 5-cylinder turbo engine delivers an exhilarating driving experience in the stock RS3, but there's always room for improvement when it comes to power and sound.

What is a Midpipe?

The midpipe refers to the section of exhaust piping that connects the catalytic converter(s) to the muffler. It plays a crucial role in exhaust flow and also helps determine the volume and tone of the exhaust note.

The stock RS3 midpipe setup utilizes smaller piping compared to many aftermarket options. This restricts exhaust flow out of the turbocharged engine, limiting power potential. The smaller piping also dampens the iconic 5-cylinder exhaust note that many RS3 drivers crave.

Benefits of Aftermarket RS3 Midpipes

Installing less restrictive midpipes with larger diameter piping unleashes several key benefits:

• Increased exhaust flow for more power
• Aggressive 5-cylinder exhaust note
• Faster turbo spool up
• Better throttle response
• Weight savings over stock system

Many RS3 owners install new midpipes in conjunction with a cat-back exhaust system upgrade. This combination enhances both power and sound for greatly improved performance and driving enjoyment.

Popular RS3 Midpipe Options

When upgrading the restrictive OEM midpipes, RS3 owners have several reputable aftermarket companies to choose from. Some of the most popular options include:

ACP RS3 Non-Resonated Midpipe

ACP offers a non-resonated midpipe for the 8V RS3 made from T304 stainless steel with 3.5" piping. This midpipe is designed to connect OEM downpipes to aftermarket cat-back exhausts.

Awtron RS3 Valved Midpipe

For adjustable sound, Awtron provides a valved midpipe controlled via smartphone app or remote fob. Their midpipe features high-flow catalytic converters and 3" piping with butterfly valves before the rear muffler.

Milltek RS3 Non-Resonated Midpipes

Known for their expertise with European performance cars, Milltek offers non-resonated midpipe upgrades for the RS3 in various finishes and piping sizes. Their midpipes connect directly to Milltek or other cat-back systems.

ARM RS3 Race Midpipe

If aiming for maximum power over streetability, ARM Motorsport's race midpipe is an aggressive option. It eliminates the secondary cats for free-flowing 3" piping that helps high-horsepower RS3 builds maximize output.

Installing Aftermarket RS3 Midpipes

While a trained automotive technician can tackle the midpipe install, many RS3 owners choose to DIY this straightforward upgrade that typically takes 1-2 hours.

What's Included in a Midpipe Kit

Aftermarket midpipes for the 8V RS3 usually include all necessary exhaust piping, v-band clamps, gaskets, and hardware needed to connect upgraded mid pipes to existing exhaust components.

Kits with catless midpipes also include secondary oxygen sensor bung inserts to prevent engine codes after removing secondary catalytic converters.

Installation Steps

With the RS3 on jack stands, the general installation steps are:

1. Remove stock midpipe components
2. Install new v-bands onto downpipes and cat-back exhaust
3. Slide on new midpipes and adjust for proper fitment
4. Secure with v-band clamps; tighten all hardware
5. Connect oxygen sensors and reinstall underbody panels
6. Start engine and check for exhaust leaks

A bit of adjustment is usually required to achieve proper midpipe positioning relative to the exhaust tips. Always ensure adequate clearance from chassis and suspension components.

Performance Gains

Exact power gains vary based on the specific midpipe installed, but average increases typically fall in the 15-25 whp range.

When combined with ECU tuning and other simple bolt-on mods like intakes and downpipes, an aftermarket midpipe can contribute to total gains exceeding 50+ whp.

Achieving the Ultimate RS3 Exhaust Setup

For RS3 owners serious about achieving maximum power and performance from their 5-cylinder turbo engine, upgrading the restrictive midpipe section is crucial. Aftermarket midpipes work hand-in-hand with cat-back exhausts, intakes, intercoolers, and ECU tunes to create comprehensive performance packages.

With the right complementary modifications, RS3 midpipe upgrades unleash the true potential of these thrilling German hot hatches while amplifying their signature 5-cylinder soundtrack.

FAQs

What are the main benefits of upgrading my RS3's midpipes?

The main benefits are increased exhaust flow for more power, improved throttle response and turbo spool up, aggressive 5-cylinder exhaust sound, and weight reduction. With supporting mods, aftermarket midpipes can contribute to 50+ whp gains.

Will aftermarket midpipes cause check engine lights?

Catless midpipes require installing oxygen sensor bung inserts so your RS3's computer doesn't throw codes due to missing secondary catalytic converters. As long as these are properly installed, you can safely remove cats without issues.

What type of gains can I expect from new RS3 midpipes?

Typical gains are in the 15-25 whp range from the midpipe upgrade alone. When combined with ECU tuning, intakes, and cat-back exhausts, total power gains usually exceed 50 whp.

Is installing RS3 midpipes something I can DIY?

The midpipe install isn't too difficult for the home mechanic. With some simple hand tools and around 1-2 hours, most RS3 owners are able to tackle this job themselves using the instructions included with the midpipe kit.