Freightliner Classic XL MBE - 4000 - 12.8 350hp Remap

Name: Freightliner Classic XL MBE - 4000 - 12.8 350hp ECU Remap
Brand: Freightliner

Expected gains of +50 BHP and +272 Nm torque

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BHP+50 hp (14%)

Standard

350 hp

Tuned

400 hp

Torque+272 Nm (15%)

Standard

1828 Nm

Tuned

2100 Nm

Suitability

Good (6.5/10)

Gains Profile

Balanced

Headroom

Medium

Freightliner Classic XL MBE - 4000 - 12.8 350hp ECU Remapping

Considering an ECU remap for your Freightliner Classic XL MBE - 4000 - 12.8 350hp? A Stage 1 remap can take this All diesel engine from 350 BHP to 400 BHP and from 1828 Nm to 2100 Nm of torque (turbocharged). This engine scores 6.5/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Freightliner Classic XL can achieve.

How this engine compares

2ndof 4 Freightliner Classic XL engines by power gain
76%of the 9,842 engines we hold gain data for see a smaller power increase
97%of engines with torque data see a smaller torque increase

Comparisons are calculated from our own recorded Stage 1 figures.

Assessment

The Freightliner Classic XL MBE - 4000 - 12.8 350hp is a turbocharged diesel engine producing 350 BHP and 1828 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 400 BHP and 2100 Nm — a gain of around 50 BHP (14%) and 272 Nm (15%).

This engine has moderate remap suitability, with a balanced spread of gains across both power and torque — providing a noticeable improvement across the rev range. The tuning headroom is classified as moderate, based on the percentage gain available from the factory output.

All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method. We recommend discussing your specific vehicle with a qualified remap professional.

Technical Specifications

Fuel Type: Diesel
Aspiration: Turbocharged
Type: Commercial
Engine Family: Freightliner Turbo Diesel

ECU & Transmission

Likely ECU Low confidence: Bosch EDC17-era diesel ECU (varies)
Gearbox Low confidence: Transmission varies by trim and market; check manual/automatic type and torque rating. At this torque level, transmission and driveline servicing history becomes especially important.

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Get a personalised remap quote for your Freightliner Classic XL. We'll connect you with a trusted professional in your area.

Confirm Your Vehicle

MakeFreightliner

ModelClassic XL

GenerationAll

EngineMBE - 4000 - 12.8 350hp

All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method.

We recommend discussing your specific vehicle with a qualified remap professional before proceeding.

Engine	BHP	Gain	Torque	Gain	Score
MBE - 4000 - 12.8 370hp	370 → 420	+50	1828 → 2100	+272	Good (6.5/10)
MBE - 4000 - 12.8 435hp	435 → 490	+55	1964 → 2150	+186	Good (6.5/10)
MBE - 4000 - 12.8 450hp	450 → 500	+50	2100 → 2300	+200	Good (6.5/10)