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What is the difference between the 40417 GT Platinum and the 40410 50 State Legal GT?

Essentially the tunes between the two are identical, however, the 40410 has gone through extensive C.A.R.B testing to be allowed for use in California. The 40410 DOES NOT allow for Custom Tuning feature, where the 40417 DOES if the selected vehicle application allows for such. Also, the 40417 supports the Toyota application where the 40410 does not.