I thought panel filter's made the car sound a lot better after around 3500rpm?
A panel filter will do little to nothing for the noise (I get a very slight amount of turbo whistle with mine).For noise your best going for one of the following:- EVOMS- Twintakeetc. . Use the search button as these all make different noises so its down to you to find a noise to your liking (theres plenty of videos on here)
Will do nothing. Get a proper intake
^^^ as mentionedITG MaxogenForge TwintageEvomsVolantEtc etc"Search" is your friend.