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15 years ago, I founded DIYAutoTune.com by merging a passion for technology (I was an IT guy) with a passion for racing (I was/am a car junkie).  I had $1200, a spare bedroom, and an idea. It has been a blessing of an opportunity and quite a ride.  DIYAutoTune has grown and evolved beyond what…

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Andy Lamus is a veteran tuner who has traveled the world teaching his TunerTek tuning classes about tuning a variety of standalone and OEM engine management systems. DIYAutoTune will be hosting his MS3Pro and MegaSquirt class on March 21 and 22, 2020. The cost of this class is $550 per person, and you can register…

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SEMA may be the performance trade show that attracts the cars with shiny paint and wild cosmetic mods, but at PRI the cars on display may have just come off the race track complete with caked on rubber and on scrapes from where somebody may have cut a pass a little too close. Naturally, the…

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If you’re installing a MSPNP or DIYPNP in your ’99 to ’05 Miata, there’s several ways to mount it, from zip ties or modified brackets to third party adapters. Jackson Risi created a set of snazzy 3D printed brackets to put an MSPNP or DIYPNP in a second generation Miata, and he’s uploaded them to…

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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…

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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…

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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…

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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…

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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…

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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…

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