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BMW MSD81 N54 UPGRADE SERVICE for all 135i, 335i 535i models with the Twin Turbo N54 engine (DME, PROGRAMMING & CODING INCLUDED)

BMW MSD81 N54 UPGRADE SERVICE for all 135i, 335i 535i models with the Twin Turbo N54 engine (DME, PROGRAMMING & CODING INCLUDED)

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We're available daily
9:30am – 4:30pm (ET)

Call or Text: (239) 291-3529

Regular price $599.00 USD
Regular price Sale price $599.00 USD
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OEM Part (Rebuilt or Remanufactured):

We offer original equipment manufacturer (OEM) control modules that are rebuilt or remanufactured by us or trusted third parties. Each module is visually inspected, and we replace or upgrade components to prevent common failures specific to each type of computer. Unlike used parts from unknown sources, which may be near the end of their lifespan and prone to early failure, our remanufactured modules are thoroughly tested for quality and performance. These parts come with a warranty, and if they fail, you won't have to pay for reprogramming again, saving you both time and money in the long run.

How It Works:

To program our part, we require the customer to ship the original faulty core to us. We will extract the original programming and coding files, including the VIN, mileage, key synchronization codes, and other important calibration data, and transfer them to our ECU, making it identical to your original unit. Your original ECU will be recycled for parts at our facility, and you will receive a fully functional, plug-and-play ECU, complete with warranty.

Turnaround:

Typically 2-3 business days. Exceptions may apply; please contact us for more details.

Installation Guarantee

You have within 10 days to install the product and inform us if it's functioning properly. If any issues arise during this period, we'll assist you in resolving them at no cost.

Please note that after the initial 10 days, this guarantee cannot be applied, and there may be associated costs for repairs or replacements.

Warranty:

Our parts come with a 1-year warranty, covering defects within that period

BMW MSD80 to MSD81 N54 Upgrade Service

Hey N54 fans! Ready to give your BMW’s twin-turbo heart a boost? At ECU Maverick, we’re offering an awesome MSD80 to MSD81 upgrade service for all you 135i, 335i, and 535i drivers out there. Just send us your DME, CAS module, and one key, and we’ll hook you up with a shiny MSD81—plug-and-play and ready to roll in just 48 hours. Plus, it’s all backed by a one-year warranty.

What’s This Upgrade All About?

If your BMW’s rocking the N54 twin-turbo engine, you’re already in good company. But swapping from the MSD80 to the MSD81 DME? That’s next-level stuff—smoother performance, better tuning potential, and a happier engine overall, and no more mosfets!
We’ve got our own MSD81 units ready to go, and we’ll program it for you at no extra cost. All you need to do is ship us your old setup, and we’ll handle the rest—plug it in, and you’re good to go!

Which BMWs Can Get the Upgrade?

This service is built for any BMW with the N54 twin-turbo engine—think 135i, 335i, and 535i models. Whether you’re zipping around in a sporty 1 Series, cruising in a sleek 3 Series, or enjoying the luxe vibes of a 5 Series, we’ve got the upgrade to match. If your N54’s in there, we can make it happen!

Part Numbers We Work With

We’ve tackled a bunch of MSD80 part numbers for this upgrade—like 12147592080 (7592080), 12147602118 (7602118), 12147604567 (7604567), 12147611358 (7611358), and 12147616431 (7616431). Then there’s 12148612998 (8612998), 12148618862 (8618862), 12148619751 (8619751), 12147586933 (7586933), 12147583332 (7583332), 12147575875 (7575875), 12147574534 (7574534), 12147573863 (7573863), 12147568842 (7568842), 12147568370 (7568370), and 12147567491 (7567491). Even more like 12147586934 (7586934) and 12147592081 (7592081) are in the mix! If your number’s in that ballpark—or even if it’s not—just give us a shout, and we’ll confirm it works.

A few more we’ve upgraded: 7586933, 7592080, 7602118, 7604567, 7611358, 8612998, 8618862, 8619751, 7575875, 7574534, 7573863, 7568842, 7568370, 7567491... we’ve got a ton covered!

How It Works

It’s as easy as it gets: pop your DME (that’s the engine control module), CAS module, and one key in the mail to us. We’ll take your MSD80 setup, upgrade it to an MSD81 we provide, and program it to fit your BMW perfectly—all plug-and-play, no extra fiddling required. Best part? We’ll have it back to you in just one business day. You’ll be back on the road, feeling that N54 power, before you know it!

Why Upgrade With Us?

We’re all about making this smooth and stress-free. The programming’s on us—no hidden fees—and our one-year warranty means you can drive with peace of mind. We’ve done this upgrade a bunch, and we love seeing N54 owners light up when they feel the difference. Fast, reliable, and BMW-approved—that’s ECU Maverick style!

Ready to Boost Your N54?

Whether you’re itching for better performance or just want to keep your twin-turbo BMW at its peak, this MSD81 upgrade is the way to go. Grab your DME, CAS, and key, ship ‘em over, and let us work our magic. Give us a call to kick things off—you’ll be back behind the wheel in a flash!

Call Us Now: 305-467-9768
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