BMW F80 M3/F82 M4 S55 EcuTek Tune

S55 Racemode Tuning isn’t just a tune—it’s a statement. Our proprietary calibration takes your BMW F80 M3 or F82 M4 to the next level. With brutal horsepower gains, explosive torque, and throttle response so sharp it’s borderline disrespectful, this is the upgrade that lets you own the streets and the track.

Safe? Absolutely. Reliable? 100%. We don’t just throw numbers at the dyno and call it a day—we fine-tune your setup to perform like a beast without sacrificing your engine’s health. Reliability and power go hand-in-hand when Racebox is behind the wheel.

If it’s got an S55 under the hood, it’s game on. That means BMW F80 M3 and F82/F83 M4. You’re in the right place.

For an S55, we’re talking about unlocking 80-100 WHP and 100-120 WTQ over stock with an OTS tune. With a custom tune and supporting mods like upgraded turbos, ethanol, and a high-flow exhaust, you’re looking at 600+ WHP and torque that pins you to your seat.

The difference comes down to personalization and power. Here’s the breakdown:

OTS (Off-The-Shelf) Tunes:

• Pre-configured maps designed for quick installation.

• Ideal for stock or lightly modified S55 engines (e.g., downpipes or intakes).

• Includes two maps (daily and sport) with basic launch control.

• No revisions or customization—flash it and you’re good to go.

• Perfect for drivers looking for instant, reliable power gains without the hassle of logging or fine-tuning.

Custom Tunes:

• Tailored to your specific setup and performance goals.

• Supports advanced modifications like ethanol blends (E30/E85), upgraded turbos, HPFP/LPFP, and more.

• Includes map switching (e.g., high-boost, low-boost) and advanced launch control.

• Requires data logging and multiple revisions for optimized performance.

• Ideal for enthusiasts pushing their S55 to the absolute limit.

It depends on your setup and goals:

• If you’re running stock or lightly modified, go with an OTS tune for easy, reliable power gains.

• If you’re chasing big numbers or running advanced mods, Custom is the way to go.

Hell yes. Ethanol is the key to unlocking serious performance.

• E30: Requires a flex-fuel kit and no additional upgrades.

• E85 (E50+): Requires HPFP/LPFP upgrades along with a flex-fuel kit.

We’ll optimize your S55 for ethanol blends so you can rip through the streets with maximum power.

Of course. Custom tunes include launch control, plus map switching so you can go from daily driver to track assassin at the push of a button.

Nope. You could be in Houston or halfway across the globe—we’ve got you covered. All you need is an EcuTek Bluetooth module, a smartphone, and an internet connection. We’ll walk you through the whole process like you’re here with us.

Here’s your checklist:

• EcuTek Bluetooth module.

• A solid smartphone or laptop (Windows OS for advanced options).

• A good internet connection.

• Any mods already installed before the first flash—don’t leave us guessing.

On average, 6–10 business days. How fast we finish depends on how quickly you respond and send logs. Custom tuning is a team effort—don’t ghost us, and we’ll get you ripping down the road ASAP.

Problems? Not a chance—just solutions. Call us at (832) 786-9038 or hit us up on the email thread you’re already in. Attach your data logs, DTC codes, and any details, and we’ll get it sorted. You’re not alone in this.

While we don’t include lifetime updates for modifications, you can always pay for a retune if your setup changes. If the changes are minor and within the first month—like adding certain mods we already support—we’ll update it for free. Just reach out, and we’ll let you know what qualifies.

It depends on your dealership, and let’s face it, some are chill, and some aren’t. They’ll need to prove the tune caused an issue to void your warranty. Pro tip: we give you a stock file to flash back before you roll into the service bay. Talk to your advisor and play it smart.

Maintenance is everything when you’re running tuned. Stay on top of your oil changes (high-quality synthetic only), swap those spark plugs regularly, and keep an eye on fluids like coolant and transmission oil. Also, invest in upgraded cooling options—like a larger heat exchanger or auxiliary radiators—to keep temps in check when pushing serious power.

Fast. We aim for a 24-48 hour turnaround during business days. Custom tunes often see daily revisions unless we’re slammed, in which case it’s closer to 48. Either way, you’ll never be left hanging—no ghosting, no weeks of waiting. That’s not how we roll.

None, technically. Racemode Tuning delivers power gains even on stock setups. But if you want to go all-in, start with upgraded downpipes, free-flowing exhaust, and an intake system. The more you bring to the table, the harder we can push.

First things first: get your car up to date with basic maintenance (fluids, spark plugs, filters). Once that’s dialed in, start with the essentials—downpipes, intercoolers, and exhaust upgrades. Call us if you need advice—we’ll steer you right.

No big deal. We’ve tuned thousands of cars worldwide without ever meeting the drivers in person. As long as you’ve got the gear (Bluetooth module, phone), we can bring Racebox-level performance to you.