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Renntech ECU-Upgrade | Mercedes-AMG | SL 55 AMG | M177 | 4.0L V8 BiTurbo | MY2020+

Price
$3,609.09

|OR|

📞 Questions before ordering? Call us at 475-227-5381
  • RENNtech Power Module (RPM) ECU -tune increases horsepower and torque across the entire power band. By modifying ignition timing, throttle mapping, optimizing air-to-fuel-ratios of the 4.0-liter BiTurbo V8 -engine (M177) found in the Mercedes-AMG SL-series of vehicles.

    The RPM is contained in a CNC machined 6061 aluminum case with pre-labeled wires and connectors. The RPM comes with a bypass that can be installed in place of the module for quickly turning the vehicle back to stock. The harness can be uninstalled for returning the vehicle back to stock.

    Through our 30+ years of ECU tuning experience, countless hours of in-house R&D, and long-term testing the RPM ECU upgrade offers the best in quality, performance, and reliability. 

    From the factory, the SL 55 AMG is delivered with 489 HP and 582 TQ. With the RENNtech RPM, the performance numbers go up to 579 HP and 700 TQ, gaining up to +90 HP and +106 TQ.

     

    Performance Numbers Overview 

     

    Mercedes-AMG SL 55 (MY2022+ | R232 | M177 | 4.0L V8 BiTurbo) Stock Performance (at crank):

    • Rated by Mercedes-Benz (avg.):                        469 HP @ 5,500-6,250rpm; 516 LB-FT @ 2,250-4,500rpm
    • Dyno measured by RENNtech (peak):               489 HP @ 4,900rpm; 582 LB-FT @ 3,400rpm
      • Note: Mercedes M177 engine performance when measured on the dyno obtains higher power numbers than rated from factory. Performance numbers published by MBUSA are a calculated average within a specific rpm range, which obviously result  in lower power numbers than at the peak. HP and TQ gains calculated by RENNtech are always based on peak stock results measured by RENNtech and upgraded peak results measured by RENNtech.
      •   

    Mercedes-AMG SL 55 (MY2022+ | R232 | M177 | 4.0L V8 BiTurbo)  Modified Performance:

    • Rated by RENNtech (peak @crank):              579 HP @ 5,050rpm; 664 LB-FT @ 3,350rpm
    • Rated by RENNtech (peak @wheel):              486 whp @ 5,750rpm; 558 wtq @ 3,350rpm
      • Crank Performance Numbers are calculated with a 16% Drivetrain loss on 4MATIC+ vehicles.

    For detailed explanation on crank HP, wheel HP, drivetrain loss, etc. please click here.

Renntech ECU-Upgrade | Mercedes-AMG | SL 55 AMG | M177 | 4.0L V8 BiTurbo | MY2020+ - Legends Auto Parts

Renntech ECU-Upgrade | Mercedes-AMG | SL 55 AMG | M177 | 4.0L V8 BiTurbo | MY2020+

Price
$3,609.09

Questions?

WE HAVE ANSWERS

How long til' I get my order?

Small items arrive to you in under 1 week

Larger products like full suspension kits must ship freight and can take 1-3 Weeks

Are Installation Instructions Included?

Instructions are included for most parts that require any sort of knowledge to install.

Here's what to do if your parts come WITHOUT instructions:

1. Some parts are genuinely common sense on how they get installed

2. If you can't figure it out on your own, YOUTUBE IS YOUR FRIEND! Our founder started this company from learning how to build headlights off a YouTube Video

3. If there are no videos on YouTube, or instructions anywhere on Google then please CALL OR EMAIL US and we will guide you through or get you instructions from the manufacturer

4. Doing installs on your own is always fun, but sometimes, it isn't. Always consider having your parts professionally installed

ALWAYS CONSIDER US. We sold you the parts, let us install them at THE LAB in Connecticut. We offer enclosed and open cross country transportation.

Of course you won't want to spend thousands on transportation to install lug nuts or emblems but if you are spending a LOT of money on parts, you may just want to send the car our way

What is your return policy if the part doesn’t fit or isn’t what I expected?

If the part was NOT installed, we accept returns within 14 days of delivery.

If the part WAS installed (or attempted installation), we cannot accept a return.

Do your parts come with a warranty?

All parts come with Manufacturer Warranty! Each manufacturer has different warranties so we suggest reading up on their warranty policy before ordering.

I found a better price somewhere else, can you beat it?

YES! If you come across a competitor with a lower advertised price than us, we will BEAT it by at LEAST 1%. Please contact us with proof of the lower priced product.

Do you give out discounts or sponsorships?

NO! We do not give out discounts or do sponsorships. You can get 5% OFF your first order by signing up for text & email notifications. OR just wait until our BLACK FRIDAY Sale that happens once a year.