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Re: hydra 2.1 vs 2.7
I'm running 2.7 and I will say the interface is very nice, and it is very easy to work with once you understand the basics. Also if you need support for anything, there will be no support or updates for the 2.1. The 2.7 can have the firmware updated while in the car through the serial connection just like tuning it. The 2.1 is a really old design and structure. If it were 2.6 that you were getting the added cost to upgrade to 2.7 would be questionable, but 2.1 will probably be worth it with all the added functionality.
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