I used it in a 2002 Nissan Frontier truck, with HORRIBLE results. According to Youtubers, it would dissolve the carbon in the intake manifold and clear an EGR warning code.
However, on my truck, it apparently ruined the MAP sensor in the throttle body, resulting in a total replacement of the throttle body and $ 1100 repair bill. After that, the motor never ran as well as before.
Needless to say, I am not touching that stuff ever again.