BMW Petrol & Hybrid Tuning – Stage 1 & 2 ECU and Gearbox Remapping by Onyx Performance

Unlock Maximum Power, Torque & Efficiency from Your BMW Petrol or Hybrid Engine

At Onyx Performance, we specialise in BMW petrol and hybrid tuning for models from 2005 onwards, offering Stage 1 & Stage 2 ECU remapping to significantly increase power, torque, and efficiency. Whether you drive a 118i, 320i, 330i, 330e (hybrid), M135i, M340i, or an M model like the M3 or M5, we provide custom ECU tuning and gearbox remapping for maximized performance and refined drivability.

Our expert technicians fine-tune both petrol and hybrid BMW engines, ensuring safe, reliable, and optimised power upgrades, perfectly tailored to your driving style and performance needs.

📍 Located in Slough, Berkshire – Conveniently near the M25, M4, and M40, serving customers from London, Berkshire, and beyond.

📞 Call us today on 01753 439321 to book your BMW petrol or hybrid remap!

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BMW Petrol & Hybrid Tuning – What is ECU Remapping?

Your BMW’s engine control unit (ECU) is programmed from the factory with conservative settings to meet global regulations and emissions standards. ECU remapping modifies these settings to unlock more power, torque, and efficiency while maintaining safety and reliability.

✔ Increased Power & Torque – Higher output for stronger acceleration
✔ Improved Throttle Response – Sharper and more immediate performance
✔ Enhanced Fuel Efficiency – Optimised economy for both petrol and hybrid models
✔ Optimised Gearbox Software – Faster, smoother gear changes for automatic & ZF gearboxes

At Onyx Performance, our remaps are custom-calibrated and dyno-tested on our 4WD Dyno, ensuring accurate, proven, and measurable performance gains.

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Stage 1 & Stage 2 BMW Petrol & Hybrid Tuning – Power Gains

We offer two tuning stages depending on your BMW’s setup and modifications:

🔹 Stage 1 – ECU Remap (Stock Hardware, Petrol & Hybrid Models)

Perfect for daily drivers who want a significant power increase without additional modifications.

• Boosted power and torque using factory hardware
• Sharper throttle response & better fuel efficiency
• Safe & reliable tuning for long-term use

🚗 Power Gains (Estimated):

• 118i / 120i (1.5L / 2.0L B38/B48): 140HP → 190HP & 280Nm
• 320i / 330i (2.0L B48): 184HP → 250HP & 400Nm
• 330e (Hybrid 2.0L B48 + Electric Motor): 292HP → 360HP & 550Nm 🔥
• M135i / M235i / M340i (3.0L B58): 306HP → 380HP & 550Nm
• M2 (N55/S55): 370HP → 410HP & 560Nm
• M3 / M4 (S55): 431HP → 510HP & 650Nm
• M5 / M8 (S63): 600HP → 680HP & 850Nm

✔ Hybrid Gains – BMW 330e Stage 1 Remap:
The BMW 330e (G20) plug-in hybrid benefits greatly from a Stage 1 remap, enhancing both electric and petrol power delivery, providing faster acceleration and more torque.

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🔹 Stage 2 – ECU & Gearbox Remap (With Upgraded Hardware, Petrol & Hybrid Models)

For enthusiasts looking for maximum performance, Stage 2 remapping requires supporting hardware upgrades for better airflow, cooling, and exhaust flow.

• More aggressive throttle response & power delivery
• Stage 2 Gearbox Remap for faster shifts and improved torque handling

🔧 Required Hardware Upgrades:

• High-flow air filter – Improves airflow & engine efficiency
• Sports cat or decat downpipe – Enhances turbo performance & exhaust flow
• Upgraded intercooler – Reduces intake temperatures for sustained power output
• EGR & GPF solutions for off-road & motorsport use

🚗 Power Gains (Estimated):

• 118i / 120i (1.5L / 2.0L B38/B48): 190HP → 210HP & 320Nm
• 320i / 330i (2.0L B48): 250HP → 280HP & 430Nm
• 330e (Hybrid 2.0L B48 + Electric Motor): 360HP → 390HP & 600Nm 🔥
• M135i / M235i / M340i (3.0L B58): 380HP → 450HP & 620Nm
• M2 (N55/S55): 410HP → 450HP & 630Nm
• M3 / M4 (S55): 510HP → 580HP & 700Nm
• M5 / M8 (S63): 680HP → 750HP & 900Nm

📞 Call us on 01753 439321 to discuss Stage 2 tuning options for your BMW petrol or hybrid!

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BMW Petrol & Hybrid Models We Tune

At Onyx Performance, we provide ECU and gearbox remapping for nearly all BMW petrol and hybrid models from 2005 to the present. Some of the most popular vehicles we tune include:

🔹 BMW Petrol & Hybrid Hatchbacks & Saloons
✔ BMW 1 Series – 118i, 120i, 128ti, M135i
✔ BMW 2 Series – 218i, 220i, 228i, M235i
✔ BMW 3 Series – 320i, 330i, 330e (Hybrid), M340i
✔ BMW 4 Series – 420i, 430i, 430e (Hybrid), 440i

🔹 BMW Petrol & Hybrid SUVs & Performance Models
✔ BMW X3 & X5 30e (Hybrid Models)
✔ BMW X1 / X2 20i, 25i, 28i
✔ BMW X3 / X4 / X5 / X6 M40i, 50i
✔ BMW X5 & X6 M50i
✔ BMW M Models – M2, M3, M4, M5, M8

📞 Call 01753 439321 to check your BMW petrol or hybrid compatibility for tuning!

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Gearbox Remapping for BMW Petrol & Hybrid Models

For BMW automatic (ZF8HP) & sport automatic (Steptronic) transmissions, we offer Stage 1 & Stage 2 gearbox tuning to refine shift speed, throttle response, and torque handling.

✔ Faster gear changes for improved acceleration
✔ Increased torque limits to support higher power outputs
✔ Smoother downshifts & better control in manual mode
✔ Launch control optimisation for more consistent starts

🔧 Highly recommended for Stage 2 ECU remapping.

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Why Choose Onyx Performance for BMW Petrol & Hybrid Tuning?

✔ Rolling Road Dyno Tested – Proven, measurable power gains
✔ Custom ECU Calibration – Bespoke tuning for petrol & hybrid BMWs
✔ Safe & Reliable Tuning – Optimised for long-term performance
✔ Thousands of Happy Customers – Trusted BMW specialists in the UK

📍 Location: Slough, Berkshire
📞 Call Us: 01753 439321

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Book Your BMW Petrol or Hybrid Remap Today!

🚀 Unlock more power, torque, and efficiency with Onyx Performance! 🚀

📞 Call 01753 439321 to book your ECU & gearbox remap today!

🔥 Transform your BMW Petrol or Hybrid with Onyx Performance – Drive Faster, Smoother, and More Powerfully! 🔥