What Comes After Stage 1? G-Series BMW Mods That Deliver Real Gains
The Next Step in Your Performance Build Starts Here
Already installed the CarBahn Stage 1 Performance Controller in your G90, G99, or other G-Series BMW? You’re just getting started. The next stage of your build is all about unlocking smarter power, without compromising daily drivability or long-term reliability.
In this guide, we’ll break down the best next-step performance mods for G-Series BMWs, including high-flow intakes, performance exhausts, intercoolers, and more.
Bundle Your Build with Performance Parts
Why Upgrade After Stage 1?
CarBahn’s Stage 1 Controller gives you a serious power bump. But to optimize airflow, thermal efficiency, and engine responsiveness, the next logical upgrades include intake, exhaust, and intercooler systems—all precision-tuned for your exact chassis.
Ready to level up? Shop the full suite of upgrades for your G-Series:
G-Series Performance Mods That Work Together
1. High-Flow Intake Systems
Upgrade your intake to improve airflow and turbocharger efficiency. Expect sharper throttle response and increased power under load.
2. Performance Exhaust Systems
Reduce backpressure, enhance exhaust tone, and unlock horsepower. CarBahn’s exhausts are drone-free and engineered to maintain street comfort.
Why Choose CarBahn for G-Series Mods?
Engineered for Integration
Every component is designed to work together, software and hardware, to ensure consistent, safe performance.
Built on Steve Dinan’s Legacy
Decades of racing and tuning experience go into each CarBahn product. Our parts don’t just work, they outperform.
OEM-Safe Power
You get performance without compromise. Every part meets or exceeds OEM reliability standards.
Expert Support
Not sure what comes next? Our team of BMW tuning specialists will walk you through your best-fit upgrades.
Schedule a Free Build Consultation
Ready for More Power? Build Smarter, Not Louder
CarBahn gives you a performance path, not just individual parts. Whether you're chasing lap times or daily driving fun, every upgrade supports long-term goals.
Explore upgrades now or connect with a tuning specialist for personalized advice.
Learn More About Stage 1 Controller
FAQ: What You Need to Know Before You Upgrade
Do I need a flash tune after Stage 1?
No. CarBahn Stage 1 Controllers are designed to work as a standalone solution. If you’re looking for flash tuning, we’ll help you choose the best path.
Will these parts void my BMW warranty?
Any aftermarket modifications can affect your warranty; however, our products are tested with vehicle safety in mind and come with the option of replacing your powertrain warranty for peace of mind.
Can I install parts in stages?
Yes. CarBahn parts are modular; build your upgrade path over time or bundle it all now for maximum performance.
Optimize Your Build with Confidence
CarBahn’s next-stage mods for G-Series BMWs help you squeeze every ounce of performance out of your Stage 1 tune, while setting the foundation for future upgrades.
Explore what’s possible. Build with confidence.