thsiao

This might be a stupid question so please do not attack me... I have the Apexi WS exhaust system and everytime I push the car over 3500 RPM, the noise on the exhaust because really soft (as opposed when I am going under 3500 RPM when I can hear the exhaust). So this means that the faster I go, the less noise I hear. Is this normal? My friends Greddy exhaust in his G35 sedan is not like that... always sounds nice, and the more he pushes the car the louder it is.

njtls

my hks exahsut is only audiable under 3k....