Make sure it is set for Hall / optical input For a V3.0 board, connect TachSelect to OptoIn, TSEL to OptoOut. For a V3.57 board, put JP1 in the 2-3 position and J1 in the 1-2 position. This is assuming you are starting with an ECU built up like I build my assembled MS130-C MegaSquirt-I PCB3.0 units. If you are building your unit up from a kit you can implement these changes during assembly. How to MegaSquirt Your Nissan Skyline RB25DET (or Other RBs). (Only needed when triggering from the– terminal of the coil, which you are not). Full Standalone EMS– Fuel and Ignition Control There is already a great write-up by 'mobythevan' at Hybridz.org on how to MegaSquirt the 280zx turbo using the MegaSquirt-I PCB2.2 ECU, combined with an HEI-4 module, but what about the more recently released PCB3 ECU? Certainly you could use it the exact same way and follow the same document combining the MS with the HEI-4 module and end up with the same result, but what about that snazzy new IGBT High Current Ignition Coil Driver that's built into the PCBv3.0 ECU? I was recently contacted by a customer that wanted to try and go this route, and I told him I'd make the necessary modifications and document the process for others to follow so here we go! Note– want to trigger a distributorless ignition or sequential injection from the stock distributor? We now offer a bolt in trigger disc that gives you that option. It needs slightly different mods and settings; see this article for how to set it up. Flash ECU with MSnS-E version 024s9 or later. TunerStudio Configuration for MS2/Extra (based on 3.3.3 or later code) Spark mode: Basic Trigger Trigger angle / offset: Start at 90 degrees. Adjust with a timing light as needed. Ignition input capture: Falling edge Spark output: Going High Number of coils: Single coil Spark A output pin: JS10 Dwell type: Standard dwell. Tune it right. Tune it for less. Tune it Yourself. DIYAutoTune Engine Management Systems. Application: 1982-1983 280ZX Turbo, or conversions using the 82-83 turbo distributor. Thanks to Chris Lupkin for permission to use this drawing. Remove D1 and jumper it, or just install a jumper wire across it's leads. Get a 330 ohm 1/4w resistor and cut the leads down to about 1/2″ at each end. Maybe a bit less. Build the ECU up to trigger from the Hall/Optical Input (all of my MS230-C units are by default configured this way). Get the latest news & updates on our new products, success stories and more!. ECU Modifications It's choice time, MS1 with MS1/Extra firmware, MS2, or MS3. You can use an MS3 with the MS2 mods shown here, although to take full advantage of the MS3's capabilities, it is better to use our L28ET trigger disc upgrade to allow sequential injection. These modifications use a BIP373 ignition transistor, sold separately from the kit. Using the MS-I PCBv3 or V3.57 with MS1/Extra firmware. The only change is to enable the IGBT High Current Ignition Coil Driver Circuit to directly drive the coil. And alternately, here's a diagram for how to wire up the relay board if you choose to use it:. Distributor Wire Colors in the OEM Wiring Harness Colors of the wires on the distributor side of the 4 pin round connector, versus on the harness side. You can connect in from either side. On our current harness for standard MegaSquirts, the MS trigger wire is the white wire in the shielded tach input, and the black wire in the shielded tach input is a ground. You can power the distributor from the same source where the MegaSquirt gets power. TunerStudio Configuration for MS1/Extra For now, continue to refer to Mobythevan's documentation for MegaTune configuration of the MSnS-E firmware. You can use the.msq files from PCBv2.2 implementations with this setup– you'll just need to reconfigure the spark output so that instead of coming from FIDLE it's now coming from D14 (aka LED17). You can do this from inside MegaTune. Select the 'Code Config' Menu, then select the 'Codebase and outputs function' option. Set 'FIDLE function' to 'Idle Control' and set 'LED17 function' to 'Spark Output'. On the 'Spark' menu choose 'Spark Settings' and set 'Spark Output Inverted' to YES. If you use someone else's.msq file, I recommend you check the MSnS-E firmware version the.msq file was built on. You cannot always use a file built on one version of MSnS_E with a different version– it's best to use the.msq files with the same version of the MSnS-E firmware that it was built on. For a V3.0, connect TachSelect to OptoIn, TSEL to OptoOut. 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