Video shot in my Swift (1,18,000 kms completed so far) where by a knocking sound was heard at 1600-1800 RPM.
In a small test, I removed top hose of the intercooler (that does to the intake manifold) and drive for 300 meters.
In reality the noise is 30% of what I feel so DO NOT conclude listening to the sound that in reality it was this bad.
Post time: Jul-12-2017