With a intake installed on the GS4 can you hear it under load? Is it loud?


Thanks

 

With an cone filter, you'll hear it. It's going to be louder. How much louder depends on everything else.

On my old car, all I did was slap a K&N cone filter onto my car and at wide open throttle, you can hear a deep growl.


But on my GS400, it's definitely louder than the stock box.