I've been using BM3 with the Wifi adapter (The new BM3 one) with no issues all year.
You need to first launch the app with your normal internet access so you can validate it, then after that, disconnect from internet and connect to the Wifi adapter.
For a real world example, when I log at...
With BM3, either flash back to stock or if he is using an OTS flash, flash the Multimap version and he can flip to stock tune with the steering wheel controls on the fly.
Forgot to update this with fitment.
It fits perfectly in the Supra. No other hardware needed. There are three holes for the OEM bracket. For the OEM battery, it uses the far left threaded hole. For this battery I used the far right threaded hole.
You can see the holes on the left, under the...
Easiest/cheapest/fastest way is a good alignment with more toe-in in the rear.
That makes a big difference.
Next is suspension arms.
I was going to come down on you for saying you are a professional street driver but others already have.