So I was set on Fast Intentions Resonated HFCs, but there is currently a 3-5 week lead time on them, which got me searching. I found that ARK makes RHFCs for our car. Problem is, I haven't found many people review them. They are typically more expensive than FI's, which I'm guessing is the reason for that. Right now they are on sale though and I don't see a lead mentioned.

Anyone have any input on these? Especially versus the FI RHFC?

 

Guess I'm the guinea pig, just received them today.