So firstly, I bought this car and tuned it to 1/1/1 after completing some progress with no problem, here is it the vmax when I upgraded to 1/1/1
as you can see there, I reached the top speed without any problem with 1/1/1 setup
then I upgraded my Infernus to 3/1/1, when I get out from the performance shop I saw this in my loading screen
I drive it normally without knowing the bug, but I feel acceleration and the vehicle grip is almost the same as 1/1/1, so I tested out the max speed, it hits 396km/h but it stuck on 3rd gear
also the backfire placed wrong as you can see here.
then I upgraded my Infernus to 3/1/1, when I get out from the performance shop I saw this in my loading screen
I drive it normally without knowing the bug, but I feel acceleration and the vehicle grip is almost the same as 1/1/1, so I tested out the max speed, it hits 396km/h but it stuck on 3rd gear
also the backfire placed wrong as you can see here.