ORIGINAL / FACTORY Petrol E 55 AMG 476hp

Mercedes-Benz CL 55 Petrol 351.6 kW (478 HP)

Mercedes-Benz CL 55 Petrol 351.6 kW (478 HP) 365088 Original
0110220330440 1000200030004000500060007000 476 HP +0 700 Nm +0 HP Nm RPM 0180360540720
Stock Original / Factory HP / Nm projection
476 HP Factory calibration
Stock backup file — 700 Nm · Petrol

Calibrated ECU file for (SW 365088). Checksum-corrected, ready to flash. Delivered instantly via secure download after payment.

16,293 calibration files in catalog · 9,693 engines · 400+ ECU platforms · Engineering since 2012 · WhatsApp support · < 30 min first response
Performance Projection Engine #5237 · Gains DB
MATCHED ENGINE E 55 AMG 476hp M113 5.5L 5.4L Petrol Factory
0110220330440 1000200030004000500060007000 476 HP +0 700 Nm +0 HP Nm RPM 0180360540720
Stock Factory HP (left) · Nm (right) · Curve shape typical for this ECU family
Real data from Gains API Dyno curve = typical ECU-family projection Final gains depend on fuel, altitude, wear
Required Modifications Factory · Petrol
Hardware
  • Factory hardware — no modifications required
Software / Calibration
  • OEM calibration restored (recovery / immobiliser / coding work)

Original files are used to revert to factory state, repair after a faulty tune, or recover an ECU before service work.

Vehicle & ECU specifications

Exact vehicle, engine and ECU identifiers this calibration file is written for. Cross-check against your ECU before flashing.

Vehicle make Mercedes-Benz
Vehicle model Cl 55
Model year 2003
Fuel / Induction Petrol
Factory power 351.6 kW (478 HP)
ECU software 365088
Calibration stage Original (Factory)
Cylinder capacity 5439 CC
Compression ratio 9,0 : 1
Bore × Stroke 97,0 X 92,0 mm
OEM engine code M113 5.5L
File format BIN / ORI
Checksum Pre-corrected (ready to flash)
Delivery Instant download after payment

Engine performance matrix

Power, torque and fuel-economy figures for every tuning stage on this engine, sourced from the tuning-database Gains API. Values are healthy-engine crank numbers; real on-road gains vary with fuel, altitude and mechanical condition.

EngineE 55 AMG 476hp CodeM113 5.5L Displacement5.4L Capacity5439 CC Compression9,0 : 1 Bore × Stroke97,0 X 92,0 mm FuelPetrol Engine ID#5237
Stage Power Torque Δ HP Δ Nm
Original / Factory 476 HP 700 Nm — —
Stage 1 515 HP 800 Nm +39 (8.2%) +100
Stage 2 546 HP 840 Nm +70 (14.7%) +140
Stage 3 785 HP 1085 Nm +309 (64.9%) +385
Stage 4 928 HP 1295 Nm +452 (95%) +595
Fuel economy gain (vs. factory map, same driving profile): combined cycle −8% , full-load cruise −12%. Diesel calibrations typically net bigger combined-cycle savings thanks to shorter duty-cycle on low-load driving.

About this calibration file

This is the factory (original) ECU calibration for the 2003 Mercedes-Benz Cl 55 Petrol, extracted from a genuine stock control unit. Use it as a verified backup before flashing any performance tune, or as a reference when recovering an ECU from a failed write.

This file matches a OEM ECU and software version 365088. Verify both identifiers in your flashing tool before writing — an ID mismatch is the most common cause of a bricked ECU. If you are unsure, upload a read of your original file via the file-request wizard and our engineers will confirm compatibility before you flash.

The file is delivered as a ready-to-flash BIN (and ORI backup where applicable) compatible with all major tools — KESS V2/V3, KTAG, AutoTuner, CMDFlash, Dimsport New Genius, MPPS, Flex, BFlash, PCMFlash, MMFlash — via OBD, bench or boot-mode as supported by your ECU family. Checksums are pre-computed and verified; no additional checksum tool is required. All files include a free revision if post-flash logs reveal a fuelling, boost or EGT issue.

Frequently asked questions

The file is written for the exact ECU hardware listed in the specifications. Read your ECU with any supported tool (KESS, KTAG, AutoTuner, CMD, etc.) and compare the hardware + software numbers against the ones on this page. If they match exactly, the file is a direct fit. If you're not 100% sure, upload your original read via the file-request wizard and our engineers will confirm within minutes — no cost, no obligation.

Two reasons. First, if your ECU write failed mid-flash and you need a verified stock image to recover from — this file restores the unit to the exact calibration it left the factory with. Second, if you plan to experiment with a tune and want a known-good rollback point that is guaranteed identical to a Mercedes-Benz dealer programming.

Instant. Immediately after payment clears (typically < 30 seconds on Stripe / PayPal), the download link appears in your account dashboard and is also emailed to you. The link is a signed, expiring URL — download it within 24 hours; if it expires, just re-generate from the dashboard at any time.

Pre-corrected. Every tuning file we sell is processed through CHKSuite (our in-house checksum engine) before it reaches your download link. You can flash it directly with KESS, KTAG, AutoTuner, CMD, Dimsport or any other supported tool — no extra checksum step required. A zero-CRC write to a modern Bosch/Siemens/Delphi ECU bricks the unit, so this is non-negotiable.

Contact us on WhatsApp or through the dashboard support thread. Free revisions are included for the same stage on the same ECU — send us a live log (via VCDS, INPA, EcuConnect, OBDeleven or similar) and we'll adjust timing, boost, rail pressure or smoke limits and re-issue the file. A failed flash itself (write aborted, bricked ECU) is recoverable with our Original file and a bench tool.

This product contains a complete original ECU backup (stock file) for MB CL 55 2003 Benzin 351.6KW 365088 . This original file corresponds to a factory engine output of approximately 351.6 kW (~478 HP). This file is ideal for ECU cloning, restoring the car back to stock and using it as a safe base for future remaps.

All ECU tuning files from TUNING-DATABASE are prepared for professional use. They are useful whenever you search by ECU ID, hardware or software number the ECU part number in the product title.Use this file for diagnostics, cloning, recovery or as a base for custom remapping.

SHA-256 fingerprintA7EEE7D7 1E744B86 4F8150BA C6A5FE85 84A10CC5 E283FDD1 2A3700A9 2741AC4C

Same engine — other calibrations

Alternative stages for the same ECU: Mercedes-Benz family