It was better with a panel filter because the stock intake system was so well designed. The induction kits available we're inefficient and suffered from heat soak. I'm wondering if the accord is the same? Or is there a clear advantage of replace the whole system. I don't want to buy a panel filter now just to need to replace it further down the line.
Go for the long and short ram.
A panel filter will not make any difference iv tried it.
The good thing with the combination induction kit is you can go short ram in the winter when heavy rain is about