DRIVE FOR
KEEPS
Get everything you need for everything you want out of your Audi B9 S4 or S5. Seamless integration and an easy install that fits like a glove. For you seasoned types, go ahead and see yourself in. If you’re just getting started, we can tag along and point you in the right direction.
CATBACK EXHAUST
ROLLING THUNDER
THE THRILL
OF THE RIDE LIVES
At the intersection of an irresistible urge and an unstoppable force you’ll find exceptional engineering and performance for more power, better handling, and more rawr. This is your journey. We pull out all the stops.
Hop on in. We’ll show you around
POWER TRIP
Unmask your B9’s superpowers with iE Performance Engine and Transmission Tuning. Use the iE POWERlink app for faster 0-60 times and stronger acceleration, all in just minutes from your phone. Use it on your stock car or upgrade your hardware to keep pace with your tune stage.
TAKE A DEEP BREATH
Close your eyes. What do you hear? Nothing if you have that flow-killing stock intake. Open things up with an iE intake and get optimal airflow, improved breathing, serious power gains, and a big serving of that feral sound you’re looking for. Comes in carbon or polymer.
Booster club
Give your stock or aftermarket turbocharger the air it needs to make more power. If you’re really serious about taking mediocre, factory flow restriction out of the equation, pair an iE Cast Turbo Inlet Pipe with your iE Cold Air Intake.
CATCH COLD
Our one and only FDS (Flow Distribution System) technology distributes airflow uniformly to reduce air intake temps and prevent heat soak. The iE Sport Intercooler for Audi B9 is nearly 2 times larger than stock, a massive upgrade for street riding. If you’re looking for the big win, the iE Race FDS Intercooler System is the largest on the market, with 280% more volume!
FIND YOUR FLOWSTATE
Replace your puny, plastic stock B9 3.0T bottlenecks with these durable iE Charge pipes. Designed for consistent sizing, delivering smooth, unrestricted air flow. Made with premium materials and design features for uncompromising durability.
PRIMAL SCREAM ON DEMAND
The iE Catback Exhaust System for your Audi B9 S4 comes with our proprietary Drone Trap technology that cancels annoying drone, leaving only the sweet song of your people.
FROM THE MIDDLE OUT
Stand out from the crowd without saying a single word. These midpipes upgrade tubing and remove two factory resonators, giving your middle exhaust some breathing room to roar.
BUILDING A RACE CAR?
TRACK DOWNPIPE
DON’T WANT THAT CHECK ENGINE LIGHT?
PROCORE DOWNPIPE
SOUND BITES
Find your voice with iE downpipes. Dial the volume up and provide more than enough flow for stock or hybrid-turbos. Our iE ProCore design delivers increased power and killer sound without the annoying check engine light.
Adrenaline Dopamine Ethanol
iE TrueFlex Tuning is the easiest and safest way to run ethanol on your Audi. Just fill it up and go, and TrueFlex automatically adjusts to the exact ethanol content in real time without switching tunes. To bring it all together, you’ll need this TrueFlex Sensor Kit, your delivery device for rocket-fueled fun.
THE JUICE IS LOOSE
Get the high-pressure fuel you need to your injectors when running turbo upgrades and/or ethanol fuel. The iE HPFP adds more flow to deliver more fuel, and safely allows for higher horsepower and torque output. A must have to take your S4 or S5 to the next level.
STAGE 3 POWER
You're not a white belt anymore. Carve out a new niche in the dojo with a Pure 750 Turbocharger to match your iE Stage 3 ECU and TCU tune. Enjoy up to 739HP and 710ft-lbs of torque from this bolt-in turbo and massive, supercar performance.
HEAD HONCHOS
High-output engines need performance parts that can pull their weight under the demands of massive boost. Our rods, pistons and head studs are ready to take on your power play any time.
LOOKING FOR SOMETHING ELSE?
SHOP ALL B9 S4/S5What a difference with the IE Intercooler! Can't go wrong purchasing any IE Part. Great workmanship!
— George
iE is a great company to deal with. They know their stuff and...wait for it, THEY ANSWER THE PHONE!
— Thomas
5 Stars - Significantly better: sound, temps, and power band.
— Lexi
Your feedback
fuels us!
I find myself smiling a lot more on the high-speed curves.
— Fredo
Just tuned my b9R with Stage 1 and holy smokes. Acceleration and responsiveness are out of this world.
— Matt
Immediate handling improvements…
— Kevin
A steal for how much I enjoy driving the thing now.
— Jaden
WE GOT YOU.
If we’ve heard it more than once, you’ll probably find it in our FAQs.
Or if it’s something more specific, there’s the Mod Gurus, our motorheads with the big brains.