Performance Upgrades
Parts are only half the story. We source, install and tune everything as one package, so your car makes the power and handles the way it should.
Engine & Turbo
- Intakes and inlet pipes
- Downpipes and exhaust
- Turbo upgrades
- Charge pipes
Fueling
- Port injection and fuel upgrades
- Ethanol / flex-fuel setups
- Supporting hardware for big power
Heat Management
- Intercoolers
- Oil and transmission cooling
- Built for Texas summers
Suspension & Handling
- Coilovers and springs
- Handling packages
- Alignment for street or track
Wheels & Tires
- Performance tire sales and install
- Fitment advice
If we haven't run it, we don't sell it
The parts we recommend are the parts we run on our own builds, including our 1,500 HP B58 shop car. Many of them are available from GB Motors Store and B58 Racing.
- 1
- Tell us your goal: daily, track, or records
- 2
- We spec parts that work together
- 3
- Install with OEM-quality hardware
- 4
- Tune it to match
BMW performance upgrades, explained
Every upgrade fixes a specific limit. Here is what each one does.
Intake and inlet
An intake and turbo inlet pipe let the turbo breathe easier. The gain is small on a stock turbo and grows with boost.
Downpipes and exhaust
The downpipe is the first section after the turbo. It lowers back pressure so the turbo spools faster. A downpipe needs a tune to match, and catless versions are for off-road use only.
Charge pipes and intercooling
Factory plastic charge pipes can crack at raised boost, so an aluminum pipe is cheap insurance. Better intercooling keeps intake air cooler, which keeps power consistent pull after pull.
Turbo upgrades
A BMW turbo upgrade moves more air than the stock unit can. It only makes sense once fueling, cooling and the drivetrain can support it.
Fueling and ethanol
Ethanol blends add knock margin and power, but the fuel system has to keep up. Port injection and pump upgrades let a car run higher ethanol content safely.
Cooling, suspension and brakes
Oil and transmission coolers help in Texas heat. Coilovers, brakes, wheels and tires put the power down and stop the car.
Why parts and tune are planned together
A part on its own rarely gives you what the box promises. A downpipe without a matching tune can throw warning lights. Ethanol without enough fuel flow can run lean.
That's why we source, install and tune everything as one package. The calibration is written for your exact parts and fuel. Every build starts with an inspection by our ASE-certified techs, with photos and video sent to you. If something needs work first, we handle it through our maintenance and repair service. After the install we log the car and revise the tune until it's right. See how that works on our ECU tuning page.
How we plan your build
Goals and budget
Tell us how you use the car and what you want from it. We'll suggest an order of parts that fits your budget, so each step builds on the last.
Daily or track
A daily driver needs smooth power and good manners. A track car needs cooling, brakes and consistency.
Legal and emissions
Some parts are sold for off-road or competition use only. We'll be clear about which parts affect emissions equipment before you decide.
Upgrades by engine
Each engine has its own limits and its own best path.
BMW B58
The 3.0L turbo six in the M340i, M240i, Supra and more. Our sister brand B58 Racing sells B58 parts shipping from Texas.
Performance upgrades FAQ
What's the best first upgrade for a turbo BMW?
Usually a tune. Most modern turbo BMWs respond well to software on a stock car, and a good tune sets up the rest of the build. From there, a downpipe and intake side parts are the common next steps.
Do I need a tune after installing a downpipe?
Yes. A downpipe changes airflow and exhaust flow, and the tune needs to account for it. Without a matching calibration you can get warning lights and you won't get the full benefit of the part.
When do I need a turbo upgrade?
When the stock turbo is the limit for your goals. That usually comes after the tune, fueling and cooling are already sorted. We'll tell you honestly if your goals can be reached without one.
Do I need port injection to run ethanol?
Not always. Many cars can run a moderate ethanol blend on stock fueling. Higher ethanol content and bigger power usually need port injection or other fuel upgrades, and the tune has to match the blend you really run.
Are performance upgrades street legal in Texas?
Some are and some aren't. Certain parts are sold for off-road or competition use only, and changes that affect emissions equipment can create legal and inspection issues. We'll talk through it for your car before any work.
Do you work with customers outside Dallas?
Yes. We can tune remotely with log reviews and revisions. B58 parts are also available from our sister brand B58 Racing, shipping from Texas.
Parts availability and results depend on model year, software and hardware. Modifying engine software or emissions equipment can affect warranty coverage on related parts, and some parts are intended for off-road or competition use only. We'll confirm what's possible for your exact car before any work.