Could it be this one?

If so, that motor is far away from what belongs into a Formula 1 RC - no wonder it got out of control all the time.

a) It's a 4-pole motor - something usually not used except for 4WD Short Course Trucks (=big and heavy offroaders - so basically the total opposite of an F1 car), and
b) It has 4370 KV - normally people put 21.5T (~1750KV) or even slower 25.5T into F1s and
c) It is sensorless, which can make driving a 2WD a little harder, due to the lack of smooth power delivery on low RPMs.

Even if it is not exactly that same motor, somehow I believe that at least 2 of these 3 point will remain valid.

For alternatives: the Hobbywing ETS legal combo (XR10 Justock ESC and 21.5T Motor) is a popular choice for F1 around here.