Hi
I just fitted a K&N air filter to my corsa vxr 11 plate.
My friend got it through his work and it's quite a big filter.
When I'm driving its fine runs fine drives ok but it hisses a lot instead of growls.
You can hear the dump valve a lot more which is good and the turbo whistle is much louder but there is no growl.
Any ideas on how to make it more growly?
Thanks
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