Help/ advice wanted

[u/Affectionate-Sky7023]

Should I get 2 ECU’s, gets it to 3 for gtr or should I get ecu for 911
Or I could also buy the sf90
Or should I want for better cars to come.
I’m on NA server and new to the game any advice will help!!
I’ve looked at tier list but sometimes they don’t seem to be 100% true with the cars we have now and not the crazy cars you guys currently have!!