MEFIBurn ECM Reflash / Tune for the Polaris Slingshot

(15 reviews) In Stock
  • $500.00

  •   Login & Earn 500 Points with this item
  • Part Name: polaris-slingshot-mefi-burn-tune
  • Part Number: SM-505

Available Options


HP Gains:

Return Policy:
No Returns

Slingshot Application Guide:

» 2015 Slingshot Base / SL / SL LE
» 2016 Slingshot Base / SL / SL LE
» 2017 Slingshot Base / SL / SL LE / SLR
» 2018 Slingshot GT LE / S / SL / SLR / SLR LE
» 2019 Slingshot GT / S / SL / SLR

Polaris Slingshot Custom Performance Tune by MEFIBurn
Dyno testing has shown that reflashing a stock Slingshot ECM, gains 11 rhp and 18 ft/lbs of torque on just the tune alone, with no other mods. If you pair the ECM tune with other engine mods such as Exhaust, Headers and a Cold Air Intake... this reflash can gain you up to 30 rwhp depending on the mods you've selected. The MEFIBurn ECM reflash improves calibrations to increase overall HP, Torque and drive-ability without breaking the bank. Not only does the ECM reflash gain you power but you can also look forward to smoother mapping and better gas mileage.

Do I have to physically send in my Polaris Slingshot ECM?
  • Yes, you will receive a "Pre-Paid" Shipping label to and from MEFIBurn (Emailed to you after purchase - Please print both labels and include in the box)
Are all ECM tunes the same?
  • No, after hundreds of ECM tunes MEFIBurn has compiled tunes for just about every possible mod configuration. The tune is unique to your mods.
How long does it take to get my ECM back?
  • The actual tune itself only takes 1 to 2 days (on average). Most of the waiting time is travel time for the ECM itself from your location to MEFIBurn and back to you again.

Disclaimer: Be sure to tell your service department that you have a custom performance tune.  Any Polaris ECU update MAY overwrite your performance tune. Please note a dealer may be able to deny a warranty claim if you have a custom tune for your Polaris Slingshot.

HP Gains Varies
Product Details
Return Policy No Returns
Why can't any ordinary car tuner tune a Polaris slingshot? ( Peter Reyes, 02/27/2017 6:39 pm )
Hey Peter,

When you read out the ECM output, it will just be a long hex file. Someone has to take that hex file and figure out what all of the addresses are doing with engine management before making any modifications. Since the MEFI controller in the Slingshot has a very specific language that is not common to other controllers used in Corvettes, Camaros, mustnags, etc. Other mainstream tuners have not taken the time to map those fields and MEFI Burn is currently the only option available to us for engine tuning.
( SlingMods )

Ask a question

Note: HTML is not translated!
Total Reviews: 15
Average Rating: 4.93

03/15/2019 7:49 am

ECM Flash/Tune
Very impressive tune and shipping speed!! I even called in because it seemed to get back to me too quickly so I thought something was wrong. However once I did the reinstall and drove it I knew...Money well spent!! Responsiveness, idle, low and high speeds have it feeling like a totally different vehicle now!!

10/08/2018 6:34 pm

This is a must upgrade
You will definitely notice the boost in power. The most noticeable improvement
is how smooth gear shifts are. I also bought the 1320 stage 1 header and rear exhaust
Sounds and runs great now !!!!

10/08/2018 3:51 pm

MEFIBurn ECM Reflash / Tune for the Polaris Slingshot:
A must have if your wanting your Slingshot to come alive without spending big bucks on a turbo or Supercharger.

04/26/2018 6:15 am

2017 Flash
I am really pleased with the reflash-The reflash was performed for an increase in fuel economy and modest performance enhancement throughout the power band.If you have a 2017 there are major improvements over the 2015. But the reflash was an eye opener. Smoother shifts, better 4, 5th pull and fuel mileage did whaywhat I asked for. Thank for the superb upgrade Turn around ship day to return Oklahoma - California - 4 days.

01/05/2018 11:22 am

can now spin the tire in first 3 gears only using gas.
and let me add WOW

Write a review

Please login or register to review
Please login or register to upload photos!

Prop 65 Notice

Prop65 WARNING: Cancer and Reproductive Harm -