Acceleration Not Quite the Same
 

2012 G37x

About a month ago, my g37x was not accelerating while driving. This would happen intermittently at speeds ranging from 20-40 mph (no codes or lights present). I had my mechanic change the air filters, clean the throttle body, check the sensors, cleaned mass airflow and fuel injection. The problem of no acceleration despite pushing the pedal to the floor has not occurred again thankfully.

Despite the issue being somewhat resolved, I still feel the car is not accelerating as well as it used to. It’s noticeable during highway driving when trying to increase speed to pass another motorist.

Does anyone have any ideas to remedy this subpar (not quite sluggish) acceleration issue?