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Plug-and-Play Labeled Harness
The factory-inspired harness takes the place of the factory fuel injection harness, with every connector labelled and tested before shipping. No modification or splicing to the car's factory wiring.
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Fully Sequential Fuel + Ignition
Fully sequential fuel and ignition enables smoother idle, smoother running, less emissions and better fuel economy, especially at low RPM. Individual ignition gives a stronger spark at high RPM with less load on the battery and alternator.
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No Factory Wiring Mods
No holes or permanent modification to the car or its wiring. The ECU mounts in the factory location with the factory bracket, coils mount where the factory coil mounts, and the kit utilizes the factory screws and hold-downs. It is fully reversible.
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Pre-Loaded Base Tune
The kit ships with a pre-loaded base tune, a really good starting point, adjustable for timing, fueling, rev limits, cams, big bore and different engine sizes and ages.
ImagineCreate3D
1969-76 914 Nearly Plug and Play Fully Sequential Fuel and Ignition System. (MS3 PRO Mini)
1969-76 914 Nearly Plug and Play Fully Sequential Fuel and Ignition System. (MS3 PRO Mini)
This kit is quoted per order — tell us about your build and we'll reply with pricing.
Request a QuoteBy default, this kit comes with a cable for connecting the ECU to the laptop for diagnostics and tuning. This works well if you just want to tune the car and forget about it.
The Wifi + Bluetooth option adds a module to the ECU that allows you to connect the ECU to a laptop, tablet, screen or phone without using the cable. You can do tuning, digital dashes, gauges etc. Or it can just be very handy for quick diagnosis and monitoring without hanging a cable across the car.
All kits are made to order. Please allow 4-6 weeks for assembly and shipping. If there are delays you will be notified by your order email.
Questions before ordering?
The Details
What's included
- Factory-inspired ECU case (factory rubber idle mixture cover fits) with MS3 PRO MINI inside, along with the optional resistors for the factory injectors
- Factory-inspired, fully labelled plug-and-play fuel injection and ignition harness (tested before shipping)
- Dubshop Type 4 Crank Trigger Kit
- Dubshop Type 4 Head Temp Sensor
- CB Performance Cam Sync Sensor
- 4 NGK LS2 Coils
- LS2 Coil Mount utilizing factory coil mount holes
- 4 NGK Spark Plugs
- NGK Spark Plug Wire Kit for LS2 Coils with grommets that clip into the engine tin
- Bosch Throttle Position Sensor
- TPS Adapter for Bosch TPS to 914 Throttle Body
- Modern Idle Air Control Valve
- AAR to IAC Adapter Mount
- Adapter Elbow Outlets for IAC to fit factory-diameter vacuum lines, 2x 90 degree, 1x 45 degree
- AEM X series CanBus inline Wideband O2 Controller kit
- Vacuum Caps: 2 for throttle body, 1 for 2.0 cold start valve, 2 for intake plenum
- ECU documentation and serial number for registration
- Map sensor vacuum line
- ECU Serial to USB adapter
- Pre-loaded Base Tune
- Full instruction and setup guide with pictures, physical and digital copies
- Optional Bluetooth + Wi-Fi module to connect to laptop, tablet or phone without cables
What it removes
- Factory Coil
- Factory Spark Plugs
- Factory Spark Plug Wires
- Factory Distributor
- Factory Throttle Position Sensor
- Factory ECU
- Factory Fuel Injection Harness
- Distributor advance and retard vacuum lines
- Factory Manifold Pressure Sensor and its vacuum lines
- Factory Decel Valve and its vacuum lines
- Factory A/C Spacer behind Engine Cooling Fan
- Factory Auxiliary Air Regulator Valve, reusing its vacuum lines for the new Idle Control Valve with included adapters
- Optional: Cold Start Injector, no longer used
You will need
- Factory ECU Mount
- Factory Distributor hold-down
- Factory fuel injectors and fuel rails, or high impedance injectors with required fuel rails
- A fuel pressure regulator
- Factory intake air temp sensor, or EV1 style air temp sensor with an adapter
- Assorted factory-length vacuum lines, new or old if in good condition
- The "cheese-head" screws from your coil mount and AAR valve
- The factory throttle position sensor screws
- Factory-style throttle body
- A factory head temp sensor, or same size and thread bolt
- Engine tin and seals installed properly and in place
- Blue locktite
- Timing light
- Calipers
- Basic tools to remove the engine and install the crank sensor
- A laptop to set base timing and verify everything is working correctly
Installation
No permanent modifications to the car or its wiring. The ECU mounts in the factory location with the factory bracket, the coils mount where the factory coil mounts, and the kit utilizes the factory screws and hold-downs. There are no holes and no permanent modification; it is fully reversible. The only two changes required are the tachometer and a weld-in wideband O2 sensor on the exhaust. The rest of the kit is plug and play.
Tuning & support
The base tune is intended to vastly speed up your engine tuning process; it is not an end stop solution. These cars are 50 years old, with engines of different sizes in different levels of condition, so even at stock displacement a professional look over the tune is recommended, with a dyno session or a remote tuning session. If you require assistance with initial startup or checking over the tune to make sure it's safe, I offer remote assistance by appointment for $50 an hour.
FAQ
How long is the build time? All kits are made to order. Please allow 4-6 weeks for assembly and shipping; if there are delays you will be notified by order email.
What if I have a silver-dial (early model) tachometer? If you have a later model tachometer (Black Dial), no modification is required, just plug in the system and it will work. With an early model tachometer (Silver Dial) you have 3 options: swap in a late model tach, open your tach and add one wire (there is a guide with pictures in the instruction manual), or buy and install a tach adapter.
1.7 vs 2.0 - what's the difference? Both are supported. The system is capable of running any displacement type 4; the pre-loaded base tune is a really good starting point but will need to be modified for non-stock engine displacements.
What tuning support is available? I recommend a professional look over the tune, even at stock displacement - a dyno tune if you would like to tune for max power, or a remote tuning session. Remote assistance is available by appointment for $50 an hour.
How strong are the 3D printed parts? The ECU Box, Adapters, Clips, Grommets and Mounts are 3D printed out of industrial materials that are more than capable of doing their job. They may come with minor visual defects due to the 3D printing process. If you have reason to believe your car will require a more temperature-resistant material, contact me - I can match the heat resistance of aluminum with more exotic material (at an increased price).
My Testimony:
I drove my green 72 1.7 914 with this system for the summer of 2024. 8000 miles, every day that wasn’t raining. It never skipped a beat, I did nothing but change the oil and set the valves. The car never really got hot, doesn’t even do the ting ting ting sound after driving it hard and turning it off as it cools down. Everyone that I have had the chance of showing the car was initially skeptical up until they heard it idle. They have all been amazed with how smooth it is. It will effortlessly stay at 80-90mph with around 5-15% throttle input. You don’t have to play with it to get it to start, you don’t have to deal with massively surging idles, hiccups, stumbles, you don't have to drive it at a specific rpm, it doesn't run different from week to week, It doesn't care if it gets wet, it doesn't care about outside temperature. It’s just smooth and happy from idle to redline.
Initial Release V2:
The yellow car is a factory 73 2.0 running on the included base tune. It is using the current V2 of the system with an idle air control valve added to replace the factory Auxiliary Air Regulator (AAR). This allows for much better control over warm up idle, restarts and even allows an automatic idle up function if the cylinder head temps start getting too high. It includes a new mount that mounts in the same location as the factory AAR and adapter elbows to utilize the factory vacuum line diameter. The driving video is intended to show driving at different RPMs and loads to show the engine is happy and smooth at any RPM and very consistent. I apologize for the poor one arm driving in advance.
Initial Prototype V1:
The green car is my factory 72 1.7. It is running the first prototype of the system in these video clips and still utilizing the factory AAR. It mostly worked fine, unless the car sat for 45-90 minutes as the AAR temp and engine temp would not be in sync and the idle would hunt for 30-60 seconds until they got back in sync. If started earlier or later it worked normally. I drove this car every day it didn't rain this past summer 2024. I didn't have to do anything but change the oil and set the valves.
My favorite comment so far “You can just drive it like a normal car.”
Disclaimer:
By purchasing this kit you are agreeing that this kit is provided at your own risk. The base tune is intended to vastly speed up your engine tuning process, it is not a end stop solution. These cars are 50 years old, with engines of different sizes in different levels of condition. For the safety of your engine it is recommended to get a professional to look over the tune either with a dyno session or a remote tuning session, even if stock displacement. The timing by default is set to the conservative end of factory specifications including vacuum advance. Remember if changing timing it will change your required air/fuel mixture. If you would like to tune for max power, I recommend a dyno tune. I believe there are a few degrees of timing at low and high load available but I do not have a dyno. Likewise, there are no safeties in the ECU settings. If you play around with settings and accidently command 100 degrees of timing, you will get it. Same with fuel which could potentially hydro lock your engine, or any of the other settings. Please read the ECU manual before playing around at the very least. MS3 PRO Mini Manual
If you require assistance with initial startup or checking over the tune to make sure it's safe, I offer remote assistance by appointment for $50 an hour.
The ECU Box, Adapters, Clips, Grommets and Mounts are 3D printed out of industrial materials that are more than capable of doing their job. That said, they may come with minor visual defects due to the 3D printing process. If you have reason to believe your car will require material more temperature resistant, please contact me. I can match the heat resistance of aluminum with more exotic material, but this increases the price and I haven't found it necessary.