RF Suppressors

[46addict]

I was doing some searching on a fix for P0340/0344/0345/0349 codes on these cars. I am getting all four of those codes at once and so far I've replaced the alternator and both cam sensors. Codes are still present and I stopped there before throwing any more parts at it. Then I found a post from @Department Of Boost mentioning the RF suppressors and how they might help on cars that have the wire harnesses moved. My car has a slight wire tuck and I think this applies to me. Does anyone have an idea of where I would need to install these suppressors to get rid of these codes? How would I determine if a wiring circuit is too noisy?

I'm 99% certain it's not an actual mechanical/timing issue as there are no driveability problems.