Using Mopar CCC on a VX?

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Hey, guys. I was wondering about Mopar CCC(Combustion Chamber Cleaner) from Dodge/Chrysler dealerships(they use in their "tune ups"), to use in my '92 VX.

My LAF is already on the fritz; repeated CEL for it, but I haven't really checked to see if it was just a wiring issue/ECU problem or not, but at 240k its probably in need of replacement.

Other than that, how would you see it affecting the catalytic converter? I can always replace a spark plug, but I'm learning about this car now and it seems to be a "more sensitive than most" exhaust system when it comes to cat and 02 sensor.

I realize it will cause a code because of the weird fumes after re-starting the car, but would it leave lasting problems? My goal is to clean out any carbon build up on top of the cylinder heads if possible through these means.

I choose using this over the "SeaFoam through the break line/air intake methods". The Mopar CCC is a spray foam that expands once inside the engine, best to let it go in through the PCV valve, once entire can has been absorbed through the vacuum there you cut off the engine and let it sit for a hour or 2. Of course, best if the car is at full temp and its mid-summer day like today. The idea is to clean everything that is possible to clean, without an engine tear down, along the top of the cylinder heads.