So here's what "20 bucks" and 20 minutes of tinkering gets:
0-50 km/h in
25 seconds vs.
36 seconds on the old controller - fresh off the charger in both cases, same road, colder temps today though (so possibly slower).
0-50 km/h in about 35 seconds after 10 km of driving.
New top speed seen:
72 km/h (45 mph) vs.
66 km/h (41 mph), on the same stretch of road (slightly downhill).
This controller makes the car noticeably more driveable in traffic. The power's there when needed to accelerate more briskly.
It may be premature, but I almost want to say that 300A is
enough. Still, I can't wait for the 400A unit.
Hey, I don't have to use it, but it's nice to know it's there if needed.