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I have a JMS BoostMAX i bought from another member about 8 months ago. Only selling as I see cam phasers replacement in my future and would likely need to remove some of the harness anyways and will likely go with a full tune after phaser replacement. Its model BX600035V4, verified with JMS support that it will work on 2017-2020 3.5L EcoBoost only. Didn't have any issues with it and was pleased with how it performed. Only ran it at 75% with 91 octane but could definitely feel a difference especially in sport mode. Have all the instructions plus there is instructions and more info on the JMS website if needed. Looking for $140 shipped in the CONUS and PayPal is good with me. Let me know if you have any questions. Thanks, Jake.