News & Events

The MS3 has a dedicated A/C control option, allowing the ECU to take several actions to control the A/C. These include a full throttle cutout, increasing idle speed while the A/C is active, compressor overspeed protection, and more. The wiring needed is very straightforward. You’d need an on/off switch on the dash, a cycling pressure…

When using the MicroSquirt as a transmission controller with an MS3, many of the MicroSquirt’s analog inputs go unused. The MicroSquirt has seven analog inputs, but it only reads the transmission temperature and possibly an analog shifter, using the ECU for engine load data. Want to use these extra inputs to run functions in the…

The relay board has an onboard fuel pump relay that will work for smaller fuel pumps. The Walbro GSL392, for example, will work fine at normal fuel pressures. We used one like this on our Chevy Nova project. But if you’re running a bigger fuel pump like an A1000, we recommend avoiding running the current…

Things you shouldn’t power from the fuel pump relay

Posted on March 22, 2019

The fuel pump relay (or a second relay wired in parallel if you are worried about too much current) can be a handy source of power for other devices. The fuel pump relay can help isolate noise from coils and injectors from the main ECU power. And powering a wideband O2 sensor controller from the…

The MSPNP Gen 2 does not have as many analog inputs available as its big brother, the MS3Pro PNP. However, you can add an analog input with our jumper.1 kit if you are willing to give up the barometric pressure sensor or knock sensor input. No soldering is required. To carry out this modification, remove…

Launch control and antilag are easily confused – both incorporate features that can help spool up a turbo, but they are intended for different applications. Launch control is intended to hold the engine at the right RPM, boost, and power output to get the fastest launch off a standing start without either bogging the engine…

Bosch’s D-Jetronic was the first commercially successful automotive electronic fuel injection, original equipment on many European cars like the Porsche 914 pictured above. Today, many owners are looking to upgrade to more tunable EFI systems, like MegaSquirt, or just trying to replace broken and unobtainable parts. We’re not sure what engine management the 914 in…

So, you’re building a turbocharged 5.0 Mustang and need an ignition to light off that boost. This is going to need a bit more spark than the stock system, so you set about looking for a good coil. But a coil per plug system isn’t in the budget, and our IGN-1As don’t work particularly well…

With the fuel pressure failsafe feature in the MS3X and MS3Pro, losing your fuel pressure doesn’t have to mean losing your engine. Instead, the MS3 can detect if you’ve lost fuel pressure, and trigger an automatic limp home failsafe. The MS3 will first activate a spark cut, while still running fuel to cool the engine.…

Are other electronics acting strangely when you activate your nitrous oxide injection? Check your voltage drop! The current draw may be putting too much load on your car’s electrical system. Voltage drops can cause anything from electronics simply flaking out, to an electric fuel pump not delivering enough fuel and leaning out your motor. A…