S650 Plug in Tuners

[flyingswall0w]

is there such as a thing as a plug in device that comes preloaded with something like a 93 octane tune?

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[robvas]

According to their website, the SCT X4 comes with preloaded tunes

https://sctflash.com/product/bdx-performance-programmer/

You can also have a custom tuner send you a file which you can load with that device