I have Persona IAFM Year 2008 the problem is when I drive RPM exceed 4,000 (especially when i drive aggresively pressing the gas pedal hard)- a burning smell emmits, have check with 2 SC's but cannot resolve. (they just clean air filter)

maybe the aircond hose is becoming very hot and burn the insulating form (the same smell when you try smelling this form)




This red area is very hot, maybe this is the course of this burn smell.