• Mon-Fri 8-6

Dyno Tuning


JM Automotive is the fastest growing Subaru performance shop in Minnesota. We sell and install performance parts, do full engine overhauls, performance builds, and offer tuning to go with it!

Our full-time tuner Devin has been tuning Subarus and other makes for a number of years and has experience with both open source and AccessPort tuning. For more information on tuning, you can call us at 763-316-5882.

We have a lot of information about tuning and modifying your car; before doing so, please read all of the information provided in the links above.


Check out our pricing list for the most common vehicles, dual tunes, dyno rental, and more.

Pre-Tune Checklist

Check out our pre-tune checklist to make sure you and your car are ready for your scheduled tune.

2015+ WRX Info

Get all you need to know on modifying your 2015+ WRX FA20 with first-hand experience from JM.

Ethanol Calculator

Use our ethanol calculator to easily calculate ethanol percentage in your fuel mix.

We tune with the following programs:

  • Cobb Accessport (Subaru, Mitsubishi Evo X, Ford Ecoboost)
  • Opensource/ECU flash (Subaru and Mitsubishi)
  • Openflash tablet (BRZ and FRS)
  • Megasquirt
  • Hydra EMS
  • Haltech
  • Motorsports Electronics

If you have a different tuning software call and see if we can help you out with it.

Note: A Cobb Accessport is require for tuning the following vehicles: 15+ Subaru WRXs/STIs, 14+ Subaru Forester XTs, all Ford Eco-Boost, 08+ Mitsubishi Evolutions.

We are here to help!

There is nothing worse than getting your car tuned and not making the power you were hoping for all because the fuel pump or injectors you just purchased are too small or you end up with massive turbo lag because the turbo you choose is too large for the power you want.

Feel free to contact us and we can help guide you through picking all the parts for your build. We do this all day everyday and have a lot of experience with aftermarket parts and can help you decide what turbo, injectors, fuel pump and many other parts to get the most out of your tune and have a great driving car for the purpose you plan to use it for. We also are parts vendors for pretty much every major performance parts brand out there and price match any listed price online from authorized dealers.

Contact us for your build advice, parts purchases, and part installations.

Before modifying your vehicle, please understand the following:

  • Modifications and tuning can and most likely will void any vehicle warranty you have
  • Certain modifications and tuning is not street legal and designed for track use only
  • We are not liable for any modifications purchased from us, installed by us, or any vehicles tuned by us. Research before you modify your car and modify your car at your own risk
  • 2013-14 WRX’s have a high failure rate and have class action lawsuits against Subaru. The factory Subaru engines have some known issues, but in these years the failure rates are even higher than others, stock or modified.
Have Questions? Call Today!
(763) 316-5882