No one on the planet has any proof that any solution will increase intercooler efficiency and/or impact real or apparent octane. It is all theory with no practical proof. Once again...the lack of these has blown up zero motors ever. You can buy one if you like if that makes you sleep good at night. But, do so knowing that there is zero proof that they actually do anything beneficial.
<-----------has one installed on his car and STILL does not recommend them