So, you’re inside on a humid summer evening, the air thick and still, when you hear it—that deep, rolling thunder creeping closer. Classic Aussie storm after a scorcher?
You’d think so. But then it doesn’t fade. It builds.
And then, an Audi RS3 streaks past, spitting and snarling like it’s ripping through the atmosphere. Then hot on its heels, its baby brother, the Audi S3. They’re different. Lower, sharper, angrier. The stance, the sound—it’s on another level. You sit up straight.
You have an RS3. Or maybe an S3. But those ones? They were built different. And just like that, one thought takes hold: I want mine to be like that.
So you start researching. First, it’s casual. Then, it’s 3 a.m., and your search history is a hall of shame: RS3 downpipe gains, best OTS ECU tunes for RS3 8V, S3 suspension mods worth it, will my partner leave me if I lower my car?
The good news? You’re not alone. The better news? We’ve rounded up the top mods that matter—for the RS3 (8Y and 8V) and the Audi S3 (8V and 8Y). The kind that makes you glance back at your car every time you walk away.
And before we begin—do yourself a favor. Add your RS3 or S3 to our garage function on the website. If you’re going to spiral, at least do it efficiently.
Audi S3: The Sophisticated Rebel We All Secretly Want
The Audi S3 is what happens when you want to be responsible... but not really. It’s fast enough to make the boring parts of life interesting — and subtle enough that no one calls you out for it.
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Engine: 2.0-litre turbocharged four-cylinder
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Power: 228 kW (310 hp) | 400 Nm torque
- 0–100 km/h: 4.8 seconds (before you’ve even thought about it)
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Drive: quattro all-wheel drive, 7-speed S tronic magic
Inside, it’s the kind of place we could happily waste an afternoon:
- 19-inch alloys (because looking good matters)
- S sport suspension for those “one more lap” moments
- Audi Drive Select so we can tune the vibe to suit our mood
If you ask us, it’s the perfect combo of everyday smart and Saturday night fun.
Audi RS3: The No-Apologies Rocket Ship
The RS3 isn’t just a car. It’s a statement. A slightly unhinged, completely addictive, "how is this even legal?" kind of statement. And honestly? We’re here for it.
- Engine: 2.5-litre five-cylinder turbo that sings like a banshee
- Power: 294 kW (400 hp) | 500 Nm torque
- 0–100 km/h: 3.8 seconds (blink and you’re late)
- Drive: quattro grip with an extra shot of insanity
The details hit just right:
- RS-specific styling that says “race me” without being obnoxious
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19-inch alloys and those spicy red brake calipers
- Fine Nappa leather seats — comfy enough for a road trip, sporty enough for track day dreams
Truth is, the RS3 is what we all secretly (or not-so-secretly) want. And we say: why not?
Performance Tuning: Unleashing the Beast in Your RS3
You know that moment when you think your RS3 is quick — and then someone flies past like you’re standing still? Yeah, us too. That’s why tuning exists. And Integrated Engineering’s Stage 1 ECU Flash is basically the cheat code.
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What it is: A serious upgrade for your RS3’s brain (aka the ECU).
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What it does: Unleashes real, use-it-everyday power without blowing up your reliability.
- How much power? Depends a little — it’s available as Stage 1 or Stage 2, depending on what goodies you already have installed (like an upgraded intake or downpipe).
The best part? No need for any backyard wizardry. Integrated Engineering’s tuning is built for people like us — people who want more speed, more smiles, and fewer horror stories on car forums. Plus, it’s delivered with a mobile flashing tool (no laptop juggling or weird cable messes). Easy, fast, deadly effective.
Check Out Integratted Engineering's Stage 1 ECU Flash
Performance Tuning: Unlock the S3’s Secret Power
If you’ve got an Audi S3 (8V), you already know you’re sitting on something special. But let’s be real — Audi definitely left a little extra power hidden away. The Integrated Engineering Stage 1 ECU Flash is how we set it free.
- What it is: A proper upgrade for your S3’s brain (and your right foot).
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What it does: Turns everyday fun into full-blown grin-like-an-idiot performance.
- Options: Available as Stage 1 or Stage 2, depending on what other bolt-ons you’ve already installed (intakes, downpipes, all the good stuff).
Flashing it is a breeze — no weird laptops, no backyard "trust me bro" setups. Integrated Engineering’s mobile tool lets us tune our cars right from the driveway. It's clean, it's fast, and it delivers the power your S3 has been begging for.
Proud to be part of the S3 (8V) crew? Same here. Let's make it properly quick.
Check Out Integratted Engineering's Stage 1 ECU Flash
Turn Up the Drama: Exhaust Upgrades for Audi RS3 (8Y & 8V)
Armytrix Valvetronic Catback Exhaust – Audi RS3 (8Y)
If you want your RS3 (8Y) to properly stand out, the Armytrix Valvetronic Catback delivers. With the option to control the valves via Audi’s factory Drive Select system or through a wireless remote, you can switch between low-key cruising and full attack mode at the push of a button. It’s the perfect way to turn up the drama without turning your daily drive into a chore.
Check out the Armytrix Valvetronic Catback Exhaust
Integrated Engineering Ultra Performance Valved Catback Exhaust – Audi RS3 (8V)
For the RS3 (8V) owners who want a proper turbo howl without going over the top, the Integrated Engineering Catback is the move. It’s designed to give you those sharp, aggressive tones when you want them — and the valves help keep things civil when you don't. Perfect for daily drivers who still want that goosebump moment every time they floor it.
Check out the Integrated Engineering Catback Exhaust
Find Your Voice: Exhaust Upgrades for Audi S3 (8Y & 8V)
Scorpion Non-Resonated Valved Catback Exhaust – Audi S3 (8Y)
If you reckon your S3 (8Y) deserves to be heard properly, the Scorpion Non-Resonated Catback will not disappoint. Ditching the mid-resonator means a louder, rawer, and way more exciting exhaust note — especially when those valves are wide open. It’s the kind of sound that makes tunnels irresistible.
Check out the Scorpion Non-Resonated Catback Exhaust
APR Valved Catback Exhaust – Audi S3 (8V)
Want your S3 (8V) to growl without sounding obnoxious? The APR Catback nails that balance. It’s deep, refined, and aggressive when you need it to be — but chill enough for longer drives when you just want to blend in. All with the kind of factory-perfect fitment you can trust.
Check out the APR Valved Catback Exhaust
Feed the Beast: Intake & Cooling Upgrades for Audi RS3 (8Y & 8V)
Integrated Engineering Carbon Fibre Cold Air Intake System – Audi RS3 (8Y & 8V)
If you're serious about unlocking more power and faster throttle response, the Integrated Engineering Carbon Fibre Intake is a must. It’s sleek, it’s functional, and with adapter kits from IE, it fits both RS3 8V and 8Y models. Big airflow gains, killer carbon looks — what's not to love?
Check out the Integrated Engineering Carbon Fibre Intake System
ARMASPEED Carbon Fibre Cold Air Intake System – Audi RS3 (8V)
Want your RS3 to breathe like an athlete? The ARMASPEED Carbon Fibre Intake brings serious airflow improvements and jaw-dropping under-bonnet looks. It’s all about smoother, faster air delivery — and it sounds incredible when you get on it. Plus, carbon just looks right on an RS3.
Check out the ARMASPEED Carbon Fibre Intake System
Fresh Air Fix: Intake Upgrades for Audi S3 (8V)
Integrated Engineering Cold Air Intake System (No Lid) – Audi S3 (8V)
Give your S3 the lungs it deserves. The Integrated Engineering Cold Air Intake ditches the factory restrictions for better breathing and a sharper throttle feel. You can even choose your vibe — go for a Carbon Fibre lid for ultimate flex, or a Polyurethane lid for a stealthier look.
Check out the Integrated Engineering Cold Air Intake System
Get Low, Stay Sharp: Suspension & Handling Upgrades for Audi RS3 & S3 (8V & 8Y)
AST / Moton Suspension Coilovers – Audi RS3 & S3 (8V & 8Y)
If you want to really transform how your RS3 or S3 handles — whether it’s for the street, track, or that "just one more corner" backroad blast — the AST / Moton Coilovers are the move. They’re built tough, ride beautifully, and you can choose your weapon: Street (5100 Series), Performance (5200 Series), or Track (5300 Series). Same kit fits both RS3 and S3 platforms — just pick your flavour.
Check out the AST / Moton Suspension Coilovers
AST ALS Adjustable Lowering Spring System – Audi RS3 & S3 (8Y)
Love the idea of a lower, meaner stance but don’t want to give up your car’s factory Damptronic control? The AST ALS Adjustable Lowering Springs have you covered. They let you dial in the perfect ride height without messing up the tech magic Audi gave you — clean, simple, and still comfy enough for the daily grind.
Check out the AST ALS Adjustable Lowering Spring System
Wrap Up: The Best Audi RS3 and S3 Upgrades to Make Your Mark
Whether you’re chasing louder sounds, sharper handling, or serious power gains, the right mods turn a good RS3 or S3 into something unforgettable. And honestly, half the fun is in the build.
If you’ve got questions about the best setup for your Audi — or you’re just keen to talk mods — we’re always happy to help. Get in touch and let’s make your RS3 or S3 properly yours.