Audi S3 (Engine and DSG Tuning)
281HP ➜ 400HP with a Custom Llandow Dyno Tune
(Audi claim 295HP, but this one made 281HP on the dyno before tuning.)

We see countless tunes done by roadside “cowboys” and smoke-and-mirror merchants. The kind who claim it’s custom when it’s never been data logged, dyno tested, or even properly checked. At Llandow Tuning you won’t get that. You also won’t get an off-the-shelf, one-size-fits-all map from a big dealer network.

Every session here is data logged, dyno tested, and road tested.
That’s how you make sure a calibration is safe, consistent, and performs properly in real-world conditions.

We’ve been developing and refining performance software since 2004, longer than anyone else in Wales with an operational dyno cell. Over that time, we’ve built what is probably the most complete diagnostic and calibration setup in the country. From factory-level BMW, VAG, Jaguar, and Mercedes systems to advanced data acquisition and emissions analysis equipment. That depth allows us to detect and correct faults others miss, ensuring every car leaves performing at its best.

Whether it’s an EA888 or EA113 engine, we’ve tuned them all. From refined Stage 1 calibrations to full big-turbo builds. If you’re planning a project or need help finishing one, get in touch and tell us your goals.

Our commitment doesn’t end when you leave the dyno. Every Llandow calibration is developed entirely in-house. No bought, borrowed, or downloaded files. We provide lifetime software support; if your tune ever needs an adjustment, we’ll update it free of charge for as long as you own the car. You can also drop in anytime for a complimentary drivetrain code scan — no appointment required.

Unlike the typical “side-of-the-road” tuner or the one-man-band with a laptop and a dyno, we have the facilities and capability to deal with issues properly. We’re a full-service development and repair centre with multiple lifts, full diagnostic capability, diesel and petrol injector testing, and a fully equipped electronics lab. From motorsport builds and classic restorations to carburettor tuning and complex ECU repairs, everything is handled under one roof.

Picture this: you’ve had a Llandow Custom Tune and a MIL light comes on a few months later. You simply pop in, no booking needed and we’ll scan, diagnose, and help you get it sorted. Compare that with an off-the-shelf tune or a “flash-and-go” tuner. When something goes wrong, the tuner blames the car, the garage blames the tuner, and you’re left in the middle. It happens more often than people think.

That’s why Llandow Tuning customers keep coming back. We don’t just tune cars we develop them, support them, and stand behind them for the long term.

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