Or EFILive.
I use EFI and HPT. I prefer EFI on the ECM tuning and most Trans setups. On full built trans, I prefer HPT. Those are hands down, the most popular and most powerful Gm suites on the market.
EFILive has a device which is called an Autocal. It allows us to remote tune the vehicle just like you can with SCT, but it can store 5 custom tunes at once, datalog of course, and it can be used to tune MULTIPLE vehicles, all on one device. It is the best product out there currently for remote tuning solutions, and is the most versatile.
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