- Dyno Tuning
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JM Automotive is Minnesota’s premier Subaru and Mitsubishi performance shop. 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 Subaru’s, Mitsubishi’s and other makes for over 10 years. He has experience with both AccessPort, open source, and stand alone tuning. For more information on tuning, you can call us at 763-316-5882 or email us at firstname.lastname@example.org.
JM Automotive is your 1 stop shop for all things performance. We can order you the right parts, install them, and get you a tune all under 1 roof. If you are looking for build advice and to purchase some parts, Contact us today to begin your build – no build is too big or too small for our experts. More information can be found by visiting our online store/parts page and filling out the form.
Note: A Cobb Accessport is require for tuning the following vehicles: 15+ Subaru WRXs & 14+ Subaru Forester XTs
If you have a different tuning software call and see if we can help you out with it.
Times are changing. To keep the aftermarket performance industry alive and following Cobb’s “Project Green Speed”, we can not disable any check engine lights while Tuning. That means we cant tune your car with an Accessport if you have Air Pump, TGV, or EGR Deletes. If you have any questions or are unsure if we can tune your car, please contact us at email@example.com
We CAN still tune E85, Upgraded Turbos, Fuel Injectors, Fuel Pumps, Intercoolers and more. These updates really only remove the ability to turn off check engine lights and flex fuel. We already off a new version of flex fuel, that works with the latest Cobb Green Speed updates, for the 2015+ WRX and more models are soon to follow! Check our Blog for the latest updates.
Check out our pricing list for the most common vehicles, dual tunes, dyno rental, and more.
Check out our pre-tune checklist to make sure you and your car are ready for your scheduled tune.
Get all you need to know on modifying your 2015+ WRX or STI with first-hand experience from JM.
While knock can be harmful to an engine, most knock detected by your Accessport is likely false knock. Knock, also called detonation, is when a small pocket of the air/fuel mix ignites outside of the flame front that was ignited by the spark plug. The shockwave created by this abnormal ignition creates rapid spikes of pressure in the cylinder and can cause damage if left untreated. The knock sensor is simply a microphone that is bolted to the cylinder block. The rapid spikes of cylinder pressure are what the knock sensor picks up and determines a knock event happened, the ECU then quickly makes the needed adjustments to ignition timing to try and stabilize the combustion.
You can find the serial number to of your Accessport V3 underneath the faceplate of the device or within the software. The serial number can be found in the software by selecting “Help” at the top, then selecting “About Accessport”, lastly scroll down until you see “Serial Number Sticker”.
Garrett Turbo describe boost creep as the following:
“Boost creep is a condition of rising boost levels past what the predetermined level has been set at. Boost creep is caused by a fully opened Wastegate(s) not being able to flow enough exhaust to bypass the housing via the Wastegate(s) itself. For example, if your boost is set to 12psi, and you go into full boost, you will see a quick rise to 12 or 13psi, but as the rpm’s increase, the boost levels also increase beyond what the boost controller or stock settings were. Boost creep is typically more pronounced at higher rpm’s since there is more exhaust flow present for the Wastegate(s) to bypass. Effective methods of avoiding or eliminating boost creep include porting the internal Wastegate(s) opening to allow more airflow out of the turbine, or to use an external Wastegate(s).”