Most Audi performance upgrades guides are a shopping list with no order: intake, tune, exhaust, done, and then a cracked plastic PCV valve strands you on the way to cars and coffee. This hub does it differently. It lays out every major upgrade category for the supercharged 3.0T, the turbo EA839 and the 4.0T V8, in the order that actually works, with a link to our in-depth guide for each. Want to start with something you can bolt on this weekend? The Titanium Intake V2 for the B8 and B8.5 3.0T is where most builds begin.
How to Plan Audi Performance Upgrades
Every build fights the same three enemies: weak factory parts, heat and traction. Add power before you deal with them and you just find the weak link faster. The order that works:
- ✅ Fix the known failures so the engine is a healthy baseline.
- ✅ Help it breathe with intake and throttle body upgrades.
- ✅ Add boost with pulleys, porting and a matched tune.
- ✅ Manage heat so the power shows up on the second pull, not only the first.
- ✅ Free the exhaust and keep it emissions-conscious.
- ✅ Put it down and stop it with mounts, brakes and wheels.
New to the terms? Keep our Audi performance parts glossary open in another tab.
1. Reliability First: OEM+ Fixes
The EA837 3.0T hides a nest of plastic under the supercharger: thermostat housing, PCV valve, coolant pipes. The OE Ultimate Under Supercharger Kit ($649.99 for B8.5 and C7) replaces them in one job, so you pay the labor once. Add the billet PCV adapter and the EA837 oil filter housing conversion for the other usual leak points.
Deep dives: Audi 3.0T under supercharger kit guide, Audi PCV valve guide, PCV breather hose, oil filter housing gasket, vacuum check valve and check engine light causes. Shop the OEM+ Upgrades and Fixes collection.
2. Intake and Throttle Body
The factory airbox is built for quiet, not flow. Our titanium intake adds a real heat shield, a 4-layer filter and a fuel line relocation kit, and it ships with a coupler for the stock throttle body. The Luft-Strom 84mm throttle body upgrade kit ($219.99-$349.99) is the next step for pulley and porting builds. Read more in our MAF sensor guide and shop the Air Intake Kits collection.
3. Supercharger and Pulley Upgrades
This is where the 3.0T gets serious. The TruDrive crank pulley ($249.99-$329.99) spins the blower faster, and the Artus-Sturm ported supercharger service ($749.99-$1,599.99) improves airflow through the Eaton R1320 itself. Both need a matched tune. Start with our Audi supercharger upgrade guide, then Audi V6 supercharged explained, Audi S4 supercharged and tensioner pulley replacement cost. Shop the Turbo and Supercharger Upgrades collection.
4. Cooling and Heat Management
More boost means more heat, and heat pulls timing. The GP Ice heat exchanger v2 ($449.99, currently pre-order) and a coolant pump upgrade ($179.99-$289.99) keep intake temperatures in check. Learn the system in heat exchanger upgrade, air to water intercooler, supercharger intercooler brick upgrade, intercooler leak symptoms, IAT gauge, auxiliary radiator and G13 coolant. Shop Cooling.
5. Ignition and Fuel
Boost blows out weak spark. The Zeus ignition coil kit for the EA837 ($129.99) is a plug-and-play refresh, and our injector rebuild service ($25.00) restores spray and flow. See Audi ignition coil replacement, ultrasonic injector cleaning and 550cc injectors, or shop Fueling Solutions.
6. Exhaust: Headers, Cats and Downpipes
The HEH Headers V2 ($1,599.99-$1,999.99) and high flow cats for the 3.0T ($1,049.99-$1,299.99, rated to 950°C) free up the hot side without turning your car into a smelly lawnmower. 4.0T owners get EA825 high-flow catted downpipes. Guides: how to install headers, high flow catalytic converter, Audi downpipe buyer's guide, test pipes vs high flow cats, high flow cat legality, turbo back exhaust and Audi S4 B9 exhaust.
7. Drivetrain and Mounts
Soft rubber mounts waste your shifts. The TruShift transmission mount ($19.99) and TruSport engine mounts ($299.99) firm things up without rattling your fillings. Read transmission mount upgrades and Torsen vs Haldex, and shop Drivetrain Components.
8. Brakes, Suspension and Wheels
A heavier right foot needs a heavier left one. The Anker Street big brake kit ($1,849.99-$1,899.99) uses four-piston calipers from the B9 RS5 and 4M Q7 with 380mm rotors. Pair it with forged VF-06 wheels built around your brake package. Shop Big Brake Kits, Suspension Upgrades and Forged Wheels, and read Audi forged wheels buying guide, forged vs cast wheels, Audi wheel fitment and how to measure wheel offset.
9. Tuning and Electronics
Software ties it all together. Our ECU clone service ($149.99) helps when swapping ECUs, and EA839 owners chasing more boost need 4 bar MAP sensors ($99.99). Model-specific tuning guides: SQ5 tune, RS5 tuning, RS7 tuning and ECU cloning service.
Audi Performance Upgrades by Stage
Here is how the categories stack for a typical 3.0T supercharged build. Stages 1 and 2 are daily-friendly; stage 3 wants cooling, cats and brakes to match.
| Stage | Upgrades | Tune needed? | Main benefit |
|---|---|---|---|
| Foundation | Under supercharger kit, PCV, coils, mounts | No | Reliability and crisp response |
| Stage 1 | Intake, ECU tune | Yes for gains | More power, better sound |
| Stage 2 | Crank pulley, throttle body, transmission tune | Yes | Big midrange gains |
| Stage 3 | Ported supercharger, heat exchanger, headers, high flow cats | Yes, custom recommended | Maximum power that repeats |
| Chassis | Big brakes, forged wheels, suspension | No | Stopping, grip and looks |
Shop the Titanium Intake V2, $359.99
✅ Billet, titanium and OE-supplier components ✅ Audi platform fitment help from real 3.0T/4.0T owners ✅ Fast US shipping
Upgrade Roadmaps by Model
Want a plan for your specific car? Use our model roadmaps: Audi S4 mods roadmap, performance parts for Audi S4, turbo Audi S4, Audi Q5 modified example builds, Audi C8 A6 guide and Audi V8 supercharged.
Install Tips Before You Start
Scan for codes and log a baseline before any part goes on. Do jobs that share labor together: the under supercharger kit and a coolant pump both happen with the blower off. Buy new gaskets, bolts and belts with the part, not after. And bed in new brakes before you test that new power.
Audi Performance Upgrades FAQ
What are the best first Audi performance upgrades?
On a 3.0T supercharged Audi, fix the known failures first (PCV, thermostat housing, coils), then add an intake and a tune. On any Audi, good brakes and fresh fluids are never wasted money.
Do I need a tune for Audi performance upgrades?
Reliability parts, coils, mounts, brakes and wheels need no tune. Pulleys, throttle bodies and porting need a matched tune to run correctly and deliver their gains.
What order should I modify my Audi in?
Reliability, intake, boost, cooling, exhaust, then drivetrain, brakes and wheels. Each step supports the next.
Which Audis get the most from these upgrades?
The EA837 3.0T supercharged cars (B8/B8.5 S4, S5, Q5, SQ5 and C7 A6 and A7 3.0T) have the deepest parts catalog. EA839 and 4.0T owners have fewer but growing options.
Are high flow cats better than test pipes?
For a street car, yes. High flow cats keep emissions equipment, reduce smell and drone, and ours are rated to 950°C for boosted 3.0T builds.
How much do Audi performance upgrades cost?
From $129.99 for an EA837 coil kit to several thousand for a ported supercharger, cooling and exhaust package. Each part above lists its current price.
Will upgrades hurt reliability?
Upgrades done in the wrong order can. Fix weak factory parts first, add cooling with boost and keep up maintenance, and a modified Audi can be more reliable than stock.
Bottom Line on Audi Performance Upgrades
The best Audi performance upgrades come in the right order: make it reliable, let it breathe, add boost, keep it cool, let it exhale, then stop and grip. Bookmark this hub, follow the links for each category, and start with the Titanium Intake V2 for the 3.0T supercharged S4, S5, Q5 and SQ5.
Shop the Titanium Intake V2, $359.99
Drive the difference. Drive Vorsprung.
Prices checked September 25, 2026 and subject to change.
