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2012 Mercedes Benz S550 Base Sedan 221.173 V8 4.6L

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Your Vehicle 2012 Mercedes Benz S550 Base Sedan 221.173 V8 4.6L
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2012 Mercedes Benz S550 Base Sedan 221.173 V8 4.6L Performance ECU Software / Tuning

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Eurocharged Stage 2 M278 ECU Tune

ES#5495478 - ec-10196-2KT - Eurocharged Stage 2 M278 ECU Tune - Unleash +127 horsepower and +195 lb-ft of torque on your M278 powered Mercedes with the Eurocharged ECU Tune and the included flash device - flash your car from home in minutes! - Eurocharged - Mercedes Benz

Unleash +127 horsepower and +195 lb-ft of torque on your M278 powered Mercedes with the Eurocharged ECU Tune and the included flash device - flash your car from home in minutes!

Brand:
Eurocharged - Corporate Logo
ES#:
5495478
Mfg#:
EC-10196-2KT
In Stock at Vendor
ON SALE! SAVE 20%
$2198.00

This product was last offered at the strikethrough price on
09-01-2026

$1758.40 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Eurocharged Stage 1 M278 ECU Tune

ES#5495477 - ec-10196-1KT - Eurocharged Stage 1 M278 ECU Tune - Unleash +97 horsepower and +147 lb-ft of torque on your M278 powered Mercedes with the Eurocharged ECU Tune and the included flash device - flash your car from home in minutes! - Eurocharged - Mercedes Benz

Unleash +97 horsepower and +147 lb-ft of torque on your M278 powered Mercedes with the Eurocharged ECU Tune and the included flash device - flash your car from home in minutes!

Brand:
Eurocharged - Corporate Logo
ES#:
5495477
Mfg#:
EC-10196-1KT
In Stock at Vendor
ON SALE! SAVE 20%
$1898.00

This product was last offered at the strikethrough price on
09-01-2026

$1518.40 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

RaceChip RS With App Control

ES#4338997 - 902312 - RaceChip RS With App Control - Get up to +69 hp and +83 lb-ft through a safe and easy to use app-controlled tuning module from RaceChip - Race Chip - Mercedes Benz

Get up to +69 hp and +83 lb-ft through a safe and easy to use app-controlled tuning module from RaceChip

Brand:
Race Chip - Corporate Logo
ES#:
4338997
Mfg#:
902312
Ships in 5 Business Days
$549.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

RaceChip S

ES#4338995 - 902310 - RaceChip S - Get up to +34 hp and +46 lb-ft through a safe and easy to use tuning module from RaceChip - Race Chip - Mercedes Benz

Get up to +34 hp and +46 lb-ft through a safe and easy to use tuning module from RaceChip

Brand:
Race Chip - Corporate Logo
ES#:
4338995
Mfg#:
902310
Ships in 5 Business Days
$399.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

RaceChip RS

ES#4338996 - 902311 - RaceChip RS - Get up to +69 hp and +83 lb-ft through a safe and easy to use tuning module from RaceChip - Race Chip - Mercedes Benz

Get up to +69 hp and +83 lb-ft through a safe and easy to use tuning module from RaceChip

Brand:
Race Chip - Corporate Logo
ES#:
4338996
Mfg#:
902311
Ships in 5 Business Days
$499.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

RaceChip GTS Black

ES#4338998 - 902315 - RaceChip GTS Black - Get up to +82 hp and +100 lb-ft through a safe and easy to use tuning module from RaceChip - Race Chip - Mercedes Benz

Get up to +82 hp and +100 lb-ft through a safe and easy to use tuning module from RaceChip

Brand:
Race Chip - Corporate Logo
ES#:
4338998
Mfg#:
902315
Ships in 5 Business Days
$799.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

RaceChip GTS Black With App Control

ES#4338999 - 902316 - RaceChip GTS Black With App Control - Get up to +82 hp and +100 lb-ft through a safe and easy to use app-controlled tuning module from RaceChip - Race Chip - Mercedes Benz

Get up to +82 hp and +100 lb-ft through a safe and easy to use app-controlled tuning module from RaceChip

Brand:
Race Chip - Corporate Logo
ES#:
4338999
Mfg#:
902316
Ships in 5 Business Days
$849.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Weistec Mercedes-Benz AMG M278 W.1 ECU Tune

ES#4707950 - 01-278-00828KT - Weistec Mercedes-Benz AMG M278 W.1 ECU Tune - Increase of +111 Horsepower, and +272 Torque! Eliminate top speed limiter, Increased throttle response. W.1 Tunes are designed for completely stock vehicles with no other modifications! - Weistec - Mercedes Benz

Increase of +111 Horsepower, and +272 Torque! Eliminate top speed limiter, Increased throttle response. W.1 Tunes are designed for completely stock vehicles with no other modifications! This software is only compatible with Windows PC / Laptop.

Brand:
Weistec - Corporate Logo
ES#:
4707950
Mfg#:
01-278-00828KT
Ships in 1 Business Day
ON SALE! SAVE 15%
$1799.00

This product was last offered at the strikethrough price on
09-01-2026

$1529.15 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Weistec Mercedes-Benz AMG M278 W.2 ECU Tune

ES#4707951 - 05-278-00060-8KT - Weistec Mercedes-Benz AMG M278 W.2 ECU Tune - Increase of +159 Horsepower, and +322 Torque! Eliminate top speed limiter, Increased throttle response. W.2 Tunes are designed for vehicles with performance exhausts & high-flow air filters! - Weistec - Mercedes Benz

Increase of +159 Horsepower, and +322 Torque! Eliminate top speed limiter, Increased throttle response. W.2 Tunes are designed for vehicles with performance exhausts & high-flow air filters! This software is only compatible with Windows PC / Laptop.

Brand:
Weistec - Corporate Logo
ES#:
4707951
Mfg#:
05-278-00060-8KT
Ships in 1 Business Day
ON SALE! SAVE 15%
$1899.00

This product was last offered at the strikethrough price on
09-01-2026

$1614.15 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

More About Performance ECU Software / Tuning

Add power and performance with special ECU software upgrades from recognized tuning leaders like APR, 034Motorsport, Unitronic, Integrated Engineering. Let our trained support staff show you how to pick the performance ECU software upgrade that suits your driving preferences and budget.

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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