Have you ever been driving your car, maybe on a warm day, and all is going well. You park and shut ‘er down for a few minutes, come back to fire her up, and she runs completely different, or struggles to run at all for a few seconds? We can help! Here’s how to eliminate Heat Soak issues during hot restarts, we walk you through dialing this in on your MegaSquirt, MSPNP, or MS3Pro ECU!

For our customers that like to be on ‘the bleeding edge’ of new features, this pre-release ‘alpha’ firmware has just been released for all MS3 and MS3 based ECUs including MS3Pro PNP and MS3Pro Evo/Ultimate/Gen1 products. Alternately, in some cases our Tech Support Team may suggest you try this to add a particular feature or address a particular issue.

EFI Expert and Author Greg Banish offers up a guest blog post offering insights on Fuel Rail Pressure Fluctuations, how they can impact the fueling of your EFI System, and what you can do to minimize any negative impact they could have!

It’s Natural Its natural and I think we all know that. You get your first bicycle as a kid and run outside to meet up with the other neighborhood kids and the first thing you hear from your buddy is “I bet I’m faster than you on my bike!”. You can’t help yourself but make…

Guest Blog Entry by Jeff Linfert Jeff has been a long time user, reseller, installer, and tuner of our products for many, many years now and has offered up some of his thoughts and insights on how to help you get the most out of your car and engine management system. If you need installation…

Save big on Innovate Motorsports wideband o2 systems now through September 30, 2021 with Innovate’s Tunabration Celebration. Innovate is offering $25 to $50 rebates on the following models: Eligible Models for $25 Rebate:LC-2 with Blue DB Gauge 3795LC-2 with Red DB Gauge 3796LC-2 with Green DB Gauge 3873MTX-L Plus Digital Combo Gauge 3918MTX-AL Analog Combo…

High performance Miata builds need high performance ignition systems; the stock ignition coils typically won’t cut it if you’re running a lot of boost on your turbo Miata or supercharged Miata or otherwise increasing the cylinder pressure (high compression n/a builds). We’ve done several of own turbo Miata builds. We’ve worked with a LOT of…

MicroSquirt has long been the go to choice for a low cost, super capable standalone ECU. Our original intention for MicroSquirt was powersports, ATVs, and motorcycles — small engines — but shortly after launch, our customers installed it in everything from golf carts to turbo V8 race cars. Having to have the board modified to…

At DIYAutoTune, we believe in supporting local manufacturing, and when we need to outsource parts like Printed Circuit Boards, some of our wiring harnesses, or enclosures, we always keep production in the USA. AMPEFI MSPNP and MS3Pro Engine Control Units as well as DIYAutoTune’s other MegaSquirt assembled ECUs all have final assembly at our production…

Many engines from the 1990s and later already have enough sensors to fully support sequential fuel injection. But what if you’re converting an older carbureted engine to EFI, or want sequential injection on an engine with an early bank to bank EFI system? Sometimes, you may be able to get an easy bolt-on solution from…