I got my 2013 g37x sedan one year ago, recently after getting subs professionally installed I now have a service engine soon light for a brake booster pressure sensor circuit. The car also has trouble starting when warm. Specifically when I start the car it’ll rev up and when the RPMs comes back down to idle they drop and the engine will cut. If I start my engine while it’s cold it starts fine as well as if I start it, turn it off, then turn it back on it will start fine. Only if my car is sitting for 15 minutes while I’m in the store will it have trouble starting. Also if I rev my engine during the start up process it’ll start up fine. Anyone know anything?