Porsche 944 ECU / DME New – Bosch Motronic 0261200086 Replacement
This new Porsche 944 ECU / DME is a modern replacement for the original Bosch Motronic ECU of the Porsche 944 2.5 8V and Porsche 924S. Ideal when your original ECU is outdated, malfunctioning, or no longer reliable.
Instead of installing a used or repaired ECU, you choose a completely newly produced solution with this unit. You don’t have to send in your old ECU and won’t be driving with 40-year-old electronics. This Porsche 944 ECU is Plug & Play interchangeable with the correct application and immediately provides a reliable base for original use, tuning, or future upgrades.
Main advantages
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Completely newly produced Porsche 944 ECU / DME
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Replacement for the original Bosch Motronic ECU
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Suitable for Porsche 944 2.5 8V
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Suitable for Porsche 924S
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Plug & Play interchangeable with the correct application
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High-quality SMD production
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No need to return old ECU
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No repair or diagnostic waiting time
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28-pin EPROM socket for upgrade chips
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Directly compatible with our 944 Remap Low CO EPROM + injectors
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Directly compatible with our MAF Phase 2 upgrade
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Reliable base for tuning and daily use
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Early Porsche 944 before 1985 may require additional modification
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Not suitable for Porsche 944S, 944 S2
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Contact us for the 944 Turbo
Perfectly compatible with MAF and Remap
This new Porsche 944 ECU / DME is not only a reliable replacement for a defective original ECU but also an ideal base for further upgrades. The ECU features a 28-pin EPROM socket and is therefore suitable for our 944 Remap Low CO EPROM, modern injectors, and MAF Phase 2 upgrade.
In combination with our MAF kit, you also replace the old original MAF sensor. This airflow meter is often nearly 40 years old and can cause stuttering, poor throttle response, a too-rich mixture, or fluctuating engine operation due to wear, contamination, or measurement deviations.
By combining the new ECU with MAF and Remap, you improve the entire control of air, fuel, and ignition. This turns your Porsche 944 or 924S into a car that not only runs more reliably but also responds more smoothly and is better prepared for modern tuning.
New instead of repaired
An original Porsche 944 ECU is now about 40 years old. Even when repair is possible, the base remains old electronics. An ECU repair usually only fixes the fault visible at that moment. Other aged components remain and can still cause problems later.
With this new Porsche 944 ECU / DME, you choose a completely newly produced solution. You don’t have to return an old ECU, you’re not dependent on diagnostic or repair time, and you avoid ongoing searches for recurring faults in old electronics.
This makes this ECU a strong choice for anyone who wants to keep their Porsche 944 2.5 8V or 924S reliable for the future.
Common complaints with a defective Porsche 944 ECU
The ECU is the brain of the engine. This computer controls, among other things, fuel injection and ignition. Due to age, heat, vibrations, and outdated solder joints, original Porsche 944 ECUs can start causing faults.
Possible symptoms of a defective Porsche 944 ECU / DME are:
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Porsche 944 starts poorly or not at all
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Irregular idle
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Poor cold start or warm start
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No or irregular ignition or injector control
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Fuel smell from the exhaust
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Engine runs too rich
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Engine struggles to start
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Car only runs well when the engine is fully warm
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Faults sometimes disappear and then return later
Do you recognize one or more of these issues? Then a defective or outdated ECU could be a possible cause.
Replaces, among others, these Bosch Motronic / Porsche DME numbers
This new Porsche 944 ECU / DME replaces, among others, the following Bosch and Porsche numbers:
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Bosch 0 261 200 006 / 0261200006
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Bosch 0 261 200 076 / 0261200076
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Bosch 0 261 200 086 / 0261200086
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Porsche 944 618 111 00 / 94461811100
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Porsche 944 618 121 03 / 94461812103
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Porsche 944 618 121 05 / 94461812105
Always check the part number and application before ordering.
Suitable for
This ECU is suitable for:
This ECU is not suitable for:
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Porsche 944S
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Porsche 944 S2
Modification for early Porsche 944
For an early Porsche 944 before 1985, extra modification is needed to use this new ECU. This is because the early models differ from the later Phase 2 control system.
Required for the conversion:
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This new Porsche 944 ECU / DME
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Different MAF from a later Porsche 944 Phase 2 or our MAF solution
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3-pin idle control valve
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Modified vacuum hoses
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2 extra wires
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New intake gaskets, because the intake must be removed
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Conversion instructions from Henk
After this conversion, you benefit from a modern and reliable ECU base with the possibility to upgrade further later with our MAF and Remap solutions.
Reliable foundation for the future
The original Bosch Motronic ECUs of the Porsche 944 and 924S are now old and increasingly difficult to find in good condition. Used ECUs are often decades old, and a repair depends on the condition of the original circuit board and components.
This new Porsche 944 ECU / DME is developed as a reliable replacement for the original unit. This makes it an ideal solution for those who want to keep their Porsche 944 2.5 8V or 924S reliable, or who are looking for a good foundation for further engine upgrades such as MAF, Remap, and modern injectors.
Frequently Asked Questions
Is this a refurbished Porsche 944 ECU?
No, this is not a refurbished or used ECU. This is a completely newly manufactured Porsche 944 ECU / DME.
Do I have to send in my old ECU?
No, you do not need to return your old ECU. You can keep, repair, or sell your old ECU yourself.
Does this ECU fit my Porsche 944?
This ECU is suitable for Porsche 944 2.5 8V and Porsche 924S. Early Porsche 944 models before 1985 require additional conversion.
Does this ECU fit a Porsche 944S or 944 S2?
No, this ECU is not suitable for the Porsche 944S or Porsche 944 S2.
Does this ECU replace Bosch 0261200086?
Yes, this ECU replaces, among others, Bosch Motronic 0261200086 and Porsche number 94461812105.
Can I use this ECU with an upgrade chip?
Yes, this ECU has a 28-pin EPROM socket and is suitable for upgrade chips, including our 944 Remap Low CO EPROM.
Is this ECU suitable for MAF conversion?
Yes, this ECU is directly suitable for our MAF Phase 2 upgrade.
Is this better than an ECU repair?
For many situations, yes. A repair usually only fixes the current defect, while the rest of the ECU remains old electronics. This ECU is completely newly manufactured and therefore offers a more reliable foundation for the future.
