BMW M340i / M440i (G20, G22) 2018-2020

CHASSIS · G20;G22
ENGINE · B58
Horsepower 460 HP
382 HP
+78
Torque 620 Nm
500 Nm
+120
Regular price $1,499.00 USD
Stage
Flasher

Custom ECU calibration for BMW M340I / M440I, G20 / G22 chassis, B58 engine. Years 2018 - 05/2020.

Factory Specs: 382 HP / 500 Nm

What's Included

  • Custom ECU calibration tailored to your specific vehicle
  • Datalog review and revisions until fully dialed in
  • Lifetime tune support

Flasher Options

  • Tuning Tools Included: We ship all hardware needed to read and flash your ECU, worldwide. Standard delivery includes the Autotuner One dongle.
  • I Have MHD / MG Flasher: Save $300. Use your existing MHD or MG Flasher license to read and flash. Digital delivery only.

How It Works

  1. Order your Stage and Flasher selection above
  2. Read your stock ECU file (using your flasher or our Autotuner)
  3. Send us your stock file
  4. We build your custom calibration
  5. You flash the file and send datalogs
  6. We refine until perfect

For off-road and motorsport use only. See our Performance Disclaimer in Terms of Service.

[ WHAT IS ECU TUNING ]

Your BMW, but actually finished.

The B58. B48. S63. N55. Some of the best engines ever built. BMW knows it. Which is why they program the ECU like they're scared of them.

Conservative timing, soft throttle maps, torque cuts in every shift, a top speed limiter your insurance company demanded. Your motor is sitting on 60 to 100+ HP that BMW won't let you use.

An RPM tune rewrites that. Sharper throttle, real mid-range pull, no more torque cuts holding you back, cold start delete so your neighbours actually know you're up. Same engine, completely different car.

Want stock back? We save your factory file before anything touches the ECU. Service visit, resale, swap to dealer-spec for the next owner. One flash, you're back.

[ HOW IT WORKS ]

Tuning, from your driveway.

No workshop visit. No flying out to us. Six steps and you're done.

[ 01 ]

Order your tune

Pick your Stage and Flasher above. Checkout. If you went with Tuning Tools Included, we ship the Autotuner One to your door with tracking. If you've got MHD or MG Flasher already, skip ahead.

[ 02 ]

Set up your gear

Windows 7+ laptop. Your flasher dongle. The OBD port under the dash. Mobile hotspot recommended for datalogging.

[ 03 ]

Read your stock file

Plug in, pull your factory ECU file, send it to us on WhatsApp. First time? We walk you through it.

[ 04 ]

We build your map

Our team writes a custom tune for your car. Your engine, your fuel, your mods, your goals. Not a generic file off the shelf.

[ 05 ]

Flash and drive

You flash the tune. Drive the car. Log a few full-throttle pulls. Send the data back.

[ 06 ]

We refine

Datalog review, revisions, fine-tuning. Done when you're happy. Lifetime support, no expiry.

[ OPTIONS & FEATURES ]

What your tune unlocks.

Every RPM tune ships with the following. No upsells, no surprise fees.

[ 01 ]

Pops, Bangs & Burble

Crackle on overrun and downshifts. Adjustable intensity. Map-switch toggle to keep your neighbours.

[ 02 ]

Multi-Map Switching

Daily map on 91 octane. Track map on 100. Switch on the fly with MHD or Autotuner. No reflash needed.

[ 03 ]

Octane-Specific Tuning

Tuned for what you actually run. 91, 93, 95, 98, 100 RON, E30, E50. You tell us the fuel, we calibrate to it.

[ 04 ]

Top Speed Limiter Removal

Factory governor disabled. Closed-course use only.

[ 05 ]

Lifetime Tune Updates

Add an intake, downpipes, intercooler, upgraded turbo later? Send us datalogs, we update your tune. Forever, no fee.

[ 06 ]

CEL Removal (Stage 2)

Catless downpipes throw codes. Stage 2 tunes kill the CEL on the affected O2 sensors. Off-road only.

[ 07 ]

Cold Start Delete

Skip the cold start cam-timing routine. Louder, meaner startup. On/off toggle.

[ 08 ]

Real-Time Datalogging

Watch boost, AFR, ignition timing live as you drive. Works with MHD, Autotuner, and Bootmod3 dashboards.

All RPM tunes are sold for off-road and motorsport use only. All tunes void factory warranty. Power figures depend on fuel quality, altitude, ambient temperature, and vehicle condition.

[ FAQ ]

Frequently asked questions.

What is ECU tuning, exactly?

Re-writing your factory ECU software. We adjust boost, ignition timing, fueling, throttle response, and limiters to unlock real power from the same factory hardware. Nothing internal gets touched.

Will tuning void my warranty?

Yes. Any flash tune can void your factory drivetrain warranty if BMW detects it. We save your stock file before touching anything, so you can revert to factory whenever.

What fuel do I need to run?

Tell us before we calibrate. We tune to your actual pump fuel: 91, 93, 95, 98, 100 RON, E30, E50. Run lower octane than your tune is built for and you risk knock. Always run what we tuned to.

Can I daily my car if it's tuned?

Yeah. Stage 1 is built for daily reliability with real-world gains. Stage 2 adds downpipes for more power and sound, still daily-friendly. Most of our customers daily their tuned cars.

Is tuning safe for the engine?

When done right, yes. We stay within safe parameters for boost, AFR, and ignition timing. Every tune gets datalogged before sign-off. Going beyond Stage 2 needs supporting hardware.

How do I actually install the tune?

Flash via OBD2 using your Autotuner One (or your own MHD/MG Flasher if you brought one). We walk you through it on WhatsApp. Most flashes take 20 minutes.

Stage 1 vs Stage 2, what's the actual difference?

Stage 1 is software only. No hardware changes. Works on a 100% stock car. Stage 2 needs catless downpipes (we can source them for you). More power, more torque, more sound.

What support do I get after I buy?

Lifetime tune revisions. 24/7 WhatsApp access to our calibration team. New mods, octane changes, drivability concerns, future updates. Covered for as long as you own the car.

Do you offer refunds?

Custom calibration files can't be refunded once delivered. Unused, sealed hardware (Autotuner dongle) can be returned within 14 days. See our Refund Policy.

FAQ image
[ WATCH ]

See our work.

Real builds. Real cars. Real dyno pulls.

Watch channel →
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BMW DNA

We started with BMWs. Still tune more of them than anything else. Every engine code, every chassis, no guesswork.

Real Workshop

Subang Jaya, Malaysia. Dyno in-house. Not a laptop in a bedroom.

Lifetime Support

Tunes ship with lifetime revisions. New mods, octane swaps, drivability tweaks. Covered as long as you own the car.

AJ Drives

Watch our work on YouTube. Customer builds, dyno pulls, project cars. Receipts on every claim.