BMW Gearbox Tuning & Servicing | XHP Stage 1 to 3 Tuning | TCU Tuning

BMW-Mini XHP Gearbox Tuning

Elevate your driving experience with Onyx Performance

BMW-Mini XHP Gearbox Tuning

Elevate your driving experience with Onyx Performance, offering a comprehensive range of gearbox tuning services for BMW F&G Series. In addition to our bespoke BMW F&G Series gearbox software, we proudly introduce XHP Stage 1, 2, and 3 gearbox remaps, harnessing the power of xHP, the world-leading solution for tuning the BMW ZF Automatic Gearbox.

xHP BMW Gearbox Remap features include: Faster shift times, Increased torque, Stronger throttle blips, Adjustable launch control, And much more…

With xHP, you have the flexibility to choose from various stages of tune, each offering unique enhancements to your driving experience. The synergy of xHP and our engine remap delivers phenomenal results, transforming your BMW’s performance.

Immerse yourself in the ultimate driving experience by combining our BMW F&G Series gearbox tuning with XHP Stage remaps.

Onyx Performance proudly serves West London and Berkshire, including locations such as Slough, Stoke Poges, Farnham Royal, Denham, Maidenhead, Windsor, Ascot, London, Marlow, Bracknell, Staines, Reading, Heathrow, Hayes, Southall, Feltham, Hounslow, High Wycombe, and Uxbridge.

Explore the XHP Stage options

Stage 1 xHP Tune

– Sporty yet economic shift points

– Optimized shift strategy for up/downhill driving

– Adapted torque limits for tuned engines

– Kickdown delete in Manual Mode

– Gear display in Dash in D/S/M Modes

Stage 2 xHP Tune

– Improved acceleration in part and full-throttle situations

– Approximately 25% faster up-shifts

– Faster paddle response time

– Further increases in torque limits for tuned engines

– Gear display in Dash in D/S/M Modes

Stage 3 xHP Tune

– Optimal shift points for acceleration

– Enhanced up-shift speeds in both D/S and M modes

– Rev-matched downshifting (Throttle-Blip)

– True manual mode with no forced up-shift at limiter

– Instant paddle response time

– Torque limits set to 1000 Nm (737 ftlb)

– Gear display in Dash in D/S/M Modes

Customer Reviews

    
 
 
       Posted on Google  
   
   Mark Wiltshire 
 
 
 
 Trustindex verifies that the original source of the review is Google. Professional yet friendly, very helpful would recommend 👍
  
 
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   Paul Forrester 
 
 
 
 Trustindex verifies that the original source of the review is Google. Nice refurbishment of my alloys
  
 
      Posted on Google  
   
   Noel Kerins 
 
 
 
 Trustindex verifies that the original source of the review is Google. Excellent service, great quality job on 2 of my black alloys. They also did my father & husbands cars too. Great value for money and a special thanks to Ben.
  
 
      Posted on Google  
   
   Jamie Taylor 
 
 
 
 Trustindex verifies that the original source of the review is Google. Had my golf R mapped and tuned to stage 2 very impressed with the work they done Ben and Sam great guys very friendly and very professional would recommend 👍🏻
  
 
      Posted on Google  
   
   DSK 
 
 
 
 Trustindex verifies that the original source of the review is Google. Brought my Audi S3 in for a Stage 3 tune with a bigger turbo and full supporting mods. Things didn’t start smoothly — the Falcon turbo I had fitted from eBay turned out to be faulty and smoked heavily on the dyno.Instead of rushing the job or giving me attitude, they helped me swap it out for a proper Garrett PowerMax and carried on professionally. Then I ran into fueling problems caused by another low‑quality eBay part, and again they took their time, diagnosed the issue properly, fixed it, and made sure everything was right before continuing.After all the setbacks, they still mapped the car, spent a lot of time on it, and didn’t charge me anywhere near what the work was worth.They showed patience, honesty, and real skill. Very happy with the service and the way they looked after me.
  
 
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   randip 
 
 
 
 Trustindex verifies that the original source of the review is Google. Highly recommended. Fitted my catless downpipe and full exhaust on my Audi RS7. The sound is amazing! The staff were very friendly and kept me updated at every step of the process
  
 
      Posted on Google  
   
   Dan Simmonds 
 
 
 
 Trustindex verifies that the original source of the review is Google. This is the second time I have used Onyx Performance first time for wheel refurbishment and last time for remap and i would use their services again in the future without a doubt. They are very knowledgeable about what they specialise in, they are polite and you can see they care not only about what their customers want to do but also about what they can offer the customer. Thanks to the OP team.
  
 
      Posted on Google  
   
   Taranjit Lehal 
 
 
 
 Trustindex verifies that the original source of the review is Google. Took my Mercedes C200 to Onyx performance for a stage 1 remap, my car is much quicker and throttle response is much better than before the remap. They also advise you about power and gains and the maps are tailored for your specific car and model, no stress on engine or gearbox. Thank Onyx , Brilliant work.
  
 
      Posted on Google  
   
   Carlos fernandez 
 
 
 
 Trustindex verifies that the original source of the review is Google. Absolutely fantastic service friendly customer service will definitely be going back for further modifications 5 star service do not go anywhere else other than onyx😎🙏🏼
  
 
      Posted on Google  
   
   Aurimas Gercas 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great service, recommend.

Book Your BMW - Mini XHP Gearbox Tuning in Slough

Unlock the full potential of your BMW or Mini automatic transmission with professional XHP gearbox tuning at our Slough workshop. Faster shifts, more power delivery, and a smoother driving experience – tailored to your needs. Contact us today to book your gearbox tune.

5-Star Google Reviews

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Why Choose Onyx Performance for Servicing?

Experts in Performance Cars

We know how to properly care for performance, modified, and luxury vehicles. Our team has the skills and experience to handle specialist requirements confidently.

Correct Service Schedules

Every service follows the exact schedule recommended by your vehicle’s manufacturer, helping maintain performance and protect your warranty.

Quality or OEM Parts

We only use high-quality aftermarket or original manufacturer parts, ensuring long-lasting reliability and top-level performance.

Full Vehicle Inspection

Our service goes beyond just changing oil. We inspect all key systems to keep your car safe, smooth, and road-ready.

Honest Advice, No Surprises

With transparent pricing and expert recommendations, you’ll always know what your car needs – no upselling, no hidden fees.

Fast, Trusted & Tracked

We offer quick turnaround, maintain service records, and send reminders – that’s why customers travel to us from across the UK.

Frequently Asked Questions

What is XHP gearbox tuning?

XHP is a specialist software upgrade for BMW and Mini automatic gearboxes that optimises shift speed, torque handling, and gearbox behaviour.

Which gearboxes can be tuned with XHP?

We support most BMW and Mini ZF 6HP, ZF 8HP, and DCT transmissions. Contact us with your vehicle details to confirm compatibility.

Is gearbox tuning safe for my car?

Yes – XHP maps are developed for reliability as well as performance. We ensure your gearbox is in good health before applying any tuning.

Can I choose different gearbox maps?

Yes – XHP offers multiple stages, from Stage 1 (refined comfort and efficiency) to Stage 3 (maximum performance), depending on your driving style.

Will XHP tuning affect my engine remap?

No – it complements ECU tuning. In fact, pairing an engine remap with XHP gearbox tuning gives the best overall performance gains.

How long does the tuning process take?

Typically 1–2 hours depending on your vehicle and gearbox type. Same-day service is available at our Slough workshop.

Get a quick quote

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