Jerry Hoffmann Autocross MR2 with MegaSquirt EMS
The DIYAutoTune ’86 MR2 in action. Running MegaSquirt-n-Spark Extra Standalone ECU for full control of ignition and fuel. [Picture by Shawn D. Doughtie.]
DIYAutoTune was started by Jerry Hoffmann in late 2004. Thanks to his wife Joy’s incredible ability to put up with him while bouncing from one project to the next, he discovered the exciting world of do-it-yourself automotive tuning, where you can scratch build from kit form, or buy pre-assembled Engine Management Systems that rival other EMS costing 3X-10X as much. After researching on the web Jerry found that this type of information and these types of performance auto parts were unavailable together in one place for you, the do-it-yourselfer.

Thus was born as the end result of this hobby turned business. Our goal is to stay on top of all of the latest tuning products and high performance car parts and kits with great products like: the MegaSquirt line of DIY Programmable Electronic Fuel Injection systems, Innovate Motorsports LC-1 and LM-1 Wideband O2 Sensor systems and gauges, MegaSquirt wiring harness building materials (including sensors and connectors), and ignition components. We’ll continue to keep our eyes open for new DIY kits and engine management system related accessories to meet your auto tuning needs. Come in and take a look around – we think you’ll like what you see!

The Way

At we pride ourselves on our ability to get your order out to you complete and immediately.  We work hard to keep all race car parts in stock and ready to ship at a moment’s notice so you can get on with your project. We know what it’s like having to wait weeks or longer for that critical piece of a project’s puzzle to arrive and we don’t want you to have to go through that – not if we can help it.  Our promise to you is that we will do our best to keep all items in stock, we will be straightforward with you regarding any delays, and we’ll keep the lines of communication open making sure you are not left wondering when your order will arrive.  We will always keep the order pages up to date with the latest information on what we have in stock for immediate shipment. If you see an auto part in our stock then rest assured it will be shipped to you within 1 business day of your order and payment – and usually the same day.

We’ve also noticed another trend in the industry lately; vendors that will tell you anything you want to hear in order to secure your purchase, who tend to disappear from the scene afterwards when the promises they’ve made turn out not to be so true. That’s not the case here as we will not make promises we can’t keep. That means we don’t make as many promises, but it also means you can trust the ones we do make.  We will tell you what you need to hear in order to get on the right track to successfully complete your project. We’ll get you on track for success. In every case we’d rather have a happy customer than an extra buck.

That’s the DIYAutoTune way and we think you’ll like it.