HKS mushroom causing knock?
HKS mushroom causing knock?
Is it true that HKS mushroom causes knock?
If have a green hks intake mushroom and stock intake pipe (unfortunatley it came with the car) and i have some high knock issues in the 6000 rpm range.
If have a green hks intake mushroom and stock intake pipe (unfortunatley it came with the car) and i have some high knock issues in the 6000 rpm range.



