Dyno Runs and Power Testing
Dyno Runs and Power Testing
Get accurate and reliable results with our dyno runs and power testing service in Slough, using our state-of-the-art 2WD and 4WD rolling road facility. Whether you want to measure your car’s power and torque output, check performance after modifications, or prepare for future tuning, our dyno runs provide precise real-world data.
Our in-house rolling road allows us to carry out baseline power runs, before-and-after comparisons, and diagnostic testing for both stock and modified vehicles. With the ability to test front-wheel drive, rear-wheel drive, and all-wheel drive cars, we ensure safe, controlled, and accurate results every time.
Located in Slough, near Langley in Berkshire, we are trusted by car enthusiasts, tuners, and performance vehicle owners nationwide for our professional dyno testing and power measurement services.
Why Choose Onyx Performance?
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We’ve been proudly featured on Carwow – a testament to the quality, professionalism, and performance-focused results that set us apart. Watch our feature here to see us in action.
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Customer Reviews
Posted on Anil SoniTrustindex verifies that the original source of the review is Google. Thank you guys for your professional, dedicated and honest opinion. You made my day by fixing my son's car so he could use it for DoE at very short notice. Max and Kay were brilliant and I would definitely recommend this garage as a organised and trustworthy business. Keep up the good work.Posted on subin pradhanTrustindex verifies that the original source of the review is Google. Took my BMW 440i to install downpipe and mid pipe. Top guys with good service and reasonable price. Will be going back for more work done.Posted on J JareCkiTrustindex verifies that the original source of the review is Google. I just done Stage1 in my audi s3, car drive superb, excelent service, thanks Ben,Sam and Onyx team! Brilliant workPosted on Dan MayTrustindex verifies that the original source of the review is Google. Honest and knowledgable! Rare these days - saves me hundreds by checking my Golf R properly. Will only use these guys from now onPosted on Darren DawesTrustindex verifies that the original source of the review is Google. I took my jaguar xfr to these guys for a re map . Excellent service. They could not have been more helpful. Very knowledgeable they definitely know what they are doing. If your looking for a re map I would highly recommend you speak to them.Posted on HanaTrustindex verifies that the original source of the review is Google. I was recommended Onyx to get my diamond-cut alloys refurbished. I am located an hour away but the recommendation was important so decided to leave my car with these guys. First impressions, the team were very polite, friendly (Essan, Ben and the guys that actually did the refurb in the intense heat) The prices were competitive. And the quality of work was super. There was slight miscommunication post the sale (which happens) but I was pleased they resolved this to my satisfaction. One idea I would suggest is advising the customer 'before' the work starts that the TPF valves may need replacing so we have the option to decide whether to do it whilst the wheels are off anyway rather than post refurb to avoid scratching the newly done alloys. Otherwise happy with my overall experience.Posted on MarkTrustindex verifies that the original source of the review is Google. Amazing servicePosted on pavan khanguraTrustindex verifies that the original source of the review is Google. The best experience ever well organised clean friendly team and the experience was amazing A big up to the whole staff.
2WD & 4WD Dyno Power Testing in Slough
Book your car for a dyno run on our in-house rolling road and get a detailed power and torque report. Perfect for performance checks, modification results, or pre-tuning assessments. Contact us today to arrange your Slough-based dyno power test.
Why Choose Onyx Performance for Servicing?
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Frequently Asked Questions
A dyno run measures your car’s power, torque, and performance output using a rolling road simulator.
Yes — we can safely test front-wheel drive, rear-wheel drive, and all-wheel drive cars on our rolling road.
Dyno testing shows accurate performance figures, useful for diagnostics, modification results, or pre- and post-tuning comparisons.
Yes — our rolling road simulates real driving conditions in a controlled environment, ensuring complete safety.
Absolutely — we can carry out baseline runs before tuning and compare them with post-tuning results.
While our rolling road facility is based in Slough, we welcome customers from across Berkshire and nationwide.
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