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Mail-In & Mobile Service

ECU - Engine Control Module Programming / Repair

DFW Mobile and Mail-In programming for shops, rebuilders and independent mechanics.

Mobile service is available in the Dallas / Fort Worth service area. Mail-in accepted nationwide. Every job backed by a 1-year unlimited guarantee.

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Mail-in nationwide or mobile in DFW - quotes returned in under 4 hours.

ECU - Engine Control Module Programming / Repair
BENCH / OEM PROGRAM
Flat-rate pricing - confirmed before any work begins
Quotes are free - no obligation.
Quotes returned in under 4 business hours
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Built around what your shop actually needs.

About this service.

Why Tuners and Engine Builders Choose Core Auto Logic

A new ECU ships virgin - no VIN, no calibration, no adaptation data. A donor ECU comes locked to a different vehicle. The work that turns either one into a running engine on your build is OEM-grade software, bench programming hardware, and the patience to do the full sequence every time.

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OEM Software on 40+ Platforms
Factory-grade programming access for Ford, GM, Chrysler/Stellantis, Toyota, Honda, Hyundai/Kia, Nissan, Subaru, BMW, Mercedes-Benz, VAG and more. Correct calibration for the VIN, every time - no aftermarket guesswork.
OEM
Cloning + VIN Write Both Supported
We clone the full flash and EEPROM image from a working ECU to a replacement, preserving adaptation data and immobilizer pairing. Or we VIN-write a virgin module. Whichever path your build needs.
CLONE
Bench Programming - No Vehicle Required
We program ECUs off-vehicle using bench power and CAN simulation. Useful when the truck does not run, the harness is damaged, or you need the module ready before installation day.
BENCH
Mail-In Service - Nationwide
Ship the ECU with the VIN, engine code and a brief work-order note. We flash, bench-test communication and ship back with a full programming report. Most ECUs turn around in 1-2 business days door-to-door.
Pre-paid label Bench-tested Tracked return Programming report
MAIL-IN · TRACKED · INSURED
1-2 DAY TURNAROUND

Two Ways to Get Your ECU - Engine Control Module Programming / Repair Done

Ship it to us for bench service, or book a mobile visit if you're in the DFW metro. Either way, the work is guaranteed.

We Come to Your Shop

Vehicle never leaves the lift. Mobile tech arrives with OEM Software and Custom Tools and a J2534 interface.

  1. Schedule a visitOnsite work is typically scheduled within 24-48 hours; same-day may be available
  2. Tech arrives on-siteRoute window confirmed before arrival, full tool kit in the van
  3. Service in-vehicleFlash, VIN pair and adaptation reset on your lift
  4. Verification driveShort drive cycle to verify the work before we leave
COVERAGE
DFW Metroplex
Dallas, Fort Worth, Plano, Arlington, Frisco, Irving
Book On-Site Service

Ship Us the Module

Bench flash + VIN pair + CAN-sim test. Return timing is confirmed in the quote response.

  1. Request intakeSubmit VIN, donor VIN and core info online or by phone
  2. Ship with pre-paid labelWe email a tracked label after quote approval
  3. Bench program & testFull flash, VIN write, adaptation, CAN-sim verify
  4. Tracked returnShipped back insured with QA scan and programming report
TURNAROUND
3-5 business days door-to-door
Bench work after intake and QA
Start a Mail-In Order
PLATFORM INTELLIGENCE

How we plan this service

Reviewed service-source signals help us choose the access path, intake details, and calibration workflow before the job starts.

Powertrain control TIER B QUALIFIED PUBLIC

Bench and boot cloning paths

Some control modules require direct bench or boot access so immobilizer, VIN, coding, and calibration data can be transferred from the original unit to a donor.

Module family
MM10JA
Access method
Bench or boot access
Workflow
Module cloning
What to send

Send the original module, donor module, VIN, and a short fault history. Include water, fire, or no-communication symptoms.

Reviewed service-source signal: 1
Engine control TIER B QUALIFIED PUBLIC

Boot-mode recovery planning

Boot-mode service is used when normal communication is unavailable or when protected memory must be read directly before a replacement module is prepared.

Module family
MT80
Access method
Boot access
Workflow
Recovery and transfer
What to send

Do not open the case before shipment unless instructed. Package the module dry and include any scan report or no-start notes.

Reviewed service-source signal: 1
Engine control TIER A RENDERABLE FACT

OBD transfer when the platform allows it

When a vehicle-side path is supported, coding or adaptation can sometimes be completed without opening the module. Bench validation still determines the final workflow.

Module family
8DF
Access method
OBD access where supported
Workflow
Vehicle-side data transfer
What to send

Provide the vehicle year, make, model, VIN, donor source, and whether the original unit still communicates.

Reviewed service-source signal: 1
VEHICLE EXAMPLES

ECU programming examples by vehicle

Representative model and year pages from high-value indexing targets for ECU cloning, VIN write, and calibration planning.

2019 Honda Accord ECU programming example Honda PCM calibration, immobilizer pairing, and post-flash verification context. 2021 Toyota Camry ECU programming example Toyota calibration update and VIN-matched programming context. 2016 Chevrolet Malibu ECU cloning example GM ECM replacement, VIN write, and calibration setup context. 2021 BMW X3 ECU programming example BMW module coding, calibration, and donor-module planning context.

Everything covered in this service

Every job is bench-tested, logged and documented. No guesswork, no try-and-see flashes.

OEM Software on 40+ Platforms
OEM
Factory-grade programming access for Ford, GM, Chrysler/Stellantis, Toyota, Honda, Hyundai/Kia, Nissan, Subaru, BMW, Mercedes-Benz, VAG, and more. The correct calibration for the VIN - every time.
ECU Cloning
CLONE
We clone the full flash and EEPROM image from the original ECU to a replacement module - preserving adaptation data, immobilizer pairing, and VIN linkage without needing the vehicle network.
Bench Programming - No Running Vehicle Required
BENCH
We program ECUs off-vehicle using bench power and CAN simulation. Useful when the vehicle does not run, the wiring harness is damaged, or you need the module programmed before installation.
Idle Relearn & Throttle Adaptation
IDLE
Every ECU flash includes the idle relearn procedure and throttle body adaptation cycle so the engine returns to correct idle quality immediately after installation - not after 100 miles of "adaptation".
Mail-In Service - Nationwide
MAIL
Ship the ECU with the VIN and engine configuration. We flash, bench-test communication, and return with a programming report. Most ECUs turn around in 1-2 business days.
1-Year Unlimited Guarantee
GUARANTEE
All ECU programming and cloning is backed by our one-year unlimited-miles guarantee. If a programming defect surfaces, we resolve it at no charge.
TOOL CAPABILITY MATRIX

Capable platforms for this work

Platforms used for module programming, calibration flashing, cloning, VIN write, and post-flash verification.

Ford ECU and module programming
OEM SOFTWARE
Ford FDRS / IDS Factory calibration files and programming routines require Ford access.
OEM subscription required OEM subscription required No practical workaround
Source basis: Ford factory diagnostic and repair software documentation.
J2534 pass-through and cloud programming
AFTERMARKET PLATFORM
Autel, Launch Tech, Topdon The interface can support the access path, but OEM portals still control many calibration files.
OEM or tool subscription may be required Tool subscription required OEM subscription required
Source basis: Autel, Launch Tech, and Topdon scanner-vendor capability documentation.
Coding, guided service functions, and verification
AFTERMARKET PLATFORM
Autel, Launch Tech, Topdon Used when supported coverage is strong enough for the vehicle and module family.
Coverage varies by module Tool subscription required
Source basis: Autel, Launch Tech, and Topdon scanner-vendor capability documentation.
Bench read, write, and clone support
BENCH PROGRAMMER
Alientech / Autotuner / Orange5 / Scanmatik / Flex / VVDI2 / PCMFlash / CGDI / X-Prog Used when OBD programming is not the right path or donor data must be handled on the bench.
Bench access required Bench/chip-level only
Source basis: Bench programmer source packet for immobilizer, ECU, TCU, EEPROM, and MCU documentation.

ECU Programming Failure Indicators

Symptoms that point to an ECU that needs programming, cloning or recovery. If the mechanical work checks out and the engine still will not run right, the software is the problem.

No-Start After ECU Swap
P0606 or U0100 codes after a module replacement. The new ECU is not paired to the immobilizer or the calibration is missing.
Failed Software Update
Communication dropped mid-flash or the wrong calibration file was sent. Module is bricked or in an undefined state.
Rough Idle After Replacement
New module loaded, vehicle starts but idles rough or stalls. Adaptation data missing - throttle and idle relearn never ran.
Immobilizer Mismatch
Engine cranks but will not start. Replacement ECU does not recognize the existing keys or BCM security pairing.
Donor ECU Locked to Other Vehicle
Junkyard or used ECU shows the wrong VIN at scan. Module needs a VIN overwrite plus IMMO re-pair before it will pass start authorization.
Performance Drift After TSB
A bulletin-required calibration was not applied. Idle quality, knock response or AFM/DFM behavior off-spec until the current TSB ships.

Common reasons customers book this service

Tap a card to see what triggers this service and which systems are affected.

New and remanufactured ECUs ship without VIN data and without the vehicle-specific calibration. They require a full VIN write, hardware parameter configuration, and calibration flash via OEM diagnostic software before the engine will run correctly.
P0600-series communication codes or P0606 (ECU processor fault) after a module swap usually mean the programming was incomplete. We finish the sequence: VIN write, idle relearn, throttle body adaptation, and immobilizer-pairing if required.
A dealer or aftermarket software update that went wrong - dropped communication mid-write, wrong calibration file - leaves the ECU in an undefined state. We recover from chip or bench with the correct OEM calibration.
When a donor engine comes with its own ECU, the module must be re-programmed to the recipient vehicle's VIN and immobilizer system, or cloned from the original ECU, so the engine starts and runs on the new chassis.
OEM technical service bulletins addressing idle quality, cold start, knock response, AFM/DFM behavior, or emissions compliance require a reflash of the ECU calibration. We carry current TSB calibration subscriptions for the platforms we support.

From quote to delivery

How we move a job from intake to fully programmed and verified.

  1. Provide VIN and Engine ConfigurationShare the VIN, engine code, transmission type, and a description of the situation (new module, failed flash, clone request). We confirm the correct calibration file and quote within 4 business hours.
    Provide VIN and Engine Configuration - Core Auto Logic ecu-program-clone step 1
  2. Module IntakeFor mobile DFW service, we come to the vehicle. For mail-in, ship the ECU in anti-static packaging - we provide a tracked return label. For cloning jobs, ship both the original and the replacement module.
    Module Intake - Core Auto Logic ecu-program-clone step 2
  3. VIN Write, Calibration Flash, and AdaptationWe write the VIN, flash the correct OEM calibration, run idle relearn and throttle adaptation, and perform a CAN bench simulation to verify communication before the module leaves our bench.
    VIN Write, Calibration Flash, and Adaptation - Core Auto Logic ecu-program-clone step 3
  4. Return with Programming ReportModule ships back with a full report: VIN confirmation, calibration file ID, software version, and post-program status. Install and start the vehicle - no extended adaptation drives required.
    Return with Programming Report - Core Auto Logic ecu-program-clone step 4

Frequently Asked Questions

Yes on most platforms. We overwrite the donor VIN and re-flash with the calibration for your vehicle. Some late-model ECUs use rolling IMMO tokens that prevent used-module transfers - we confirm before you source the donor.
The most common cause is an immobilizer mismatch - the new ECU does not recognize the existing keys or body module security pairing. We resolve this by re-pairing the IMMO system as part of the programming sequence.
Yes. Bench programming is our standard approach for mail-in service. We use a bench CAN harness to simulate the vehicle network. For platforms that require live vehicle parameters during programming, we note this at quote time.
Cloning transfers the complete flash image including any installed tune. If you want the replacement module to match the original exactly - including an aftermarket tune - cloning achieves that. If you want stock calibration on the replacement, we flash from the OEM calibration file instead.
In practice, "programming" refers to the full sequence: VIN write, calibration flash, hardware parameter setup, and adaptation initialization. "Flashing" refers specifically to writing the calibration file. We always perform the full programming sequence - not just the file write.
Yes. We service diesel ECUs on Duramax, PowerStroke, Cummins, and common European diesel platforms. Diesel ECU work includes the same programming sequence plus injector coding where required by the platform.
// ironclad guarantee

Backed by our 100% guarantee - not a footnote.

Every flash, calibration and programming job is backed by one of the strongest warranties in the industry. If it doesn't work, we fix it. If we can't fix it, you don't pay. Simple.

1-Year Unlimited Miles
Programming covered from the day we ship
No Fix, No Charge
Zero risk to you or your shop
Free Re-Flash
If it needs another pass, it's on us
Direct Tech Line
No ticket queues, no hold music

Ready to get this programmed and out the door?

Ship your module nationwide, or book mobile service in DFW. Most quotes are returned in under 4 business hours.

Start a Mail-In Order Book DFW Mobile Service

Prefer to talk it through? (945) 382-4065 - average answer under 5 minutes.