Hi, i installed my Pipercross induction kit on my Astra 2.0 16v (2000) and it has a weired noise coming from the filter when the
engine is idling. When you rev the engine it sounds spot on, but lay off the
revs and it sounds like a tractor! Any Ideas?
I spoke to pipercross and they replied with this:
"This is actually an issue that does seem to crop up every now and then. The
noise you here with the induction kit fitted, is the noise that the 2.0 16v
Ecotec makes anyway on many cars. With the standard air box fitted you can't
here it so clearly, as it works like a silencer. When you remove the airbox
however, the noise becomes more apparent.
The noise isn't caused by fitment of the induction kit, just made easier to
hear, so isn't anything to worry about. It doesn't affect either the reliabilty
or performance of the car."
This is all well and good but it still sounds like shit on idling....does anybody know how to reduce the noise????