ts is so funny. fyi, it was the campro 1.3 iafm sound which is more like a 'whining' sound in higher rpm.
as time goes by, the sound will become louder until your iafm(module) need to be replaced.
and its normal for campro auto engine to rev up to 6.5k especially when going uphill before gear change.
btw, even the campro cps cam opening does not produce any sound like vtec or nissan's n1.