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The dual tuning is nothing new or invented. The pcm has two tables, the low octane and the high octane table. For those who use the high octane gas, you can benefit from having two high octane tables, this is accomplished by copying the hi to the low. For those who run low octane, both tables are alterered for better performance, but you're not paying for "daul tuning" it's already built in. The tuner is just making sure you'll notice a performance increase whether you're running good or bad gas.The pcm will switch between the two tables based on how much detonation is detected. Keep in mind the pcm is not "dual tuned" there's not such thing, lol, all it is , there are two tables, one protects you from detonating your engine to death and the other is used when no detonation is detected.
 
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