Just went for a drive up some twisty mountain roads and thought I'd try out new Open flash tablet logging
lot of driving in 3000 to 5000 range where the "rasp" held it a few times at around 4000 and you can modulate the noise with accelerator pedal while engine revs pretty much the same.
does seem like intake noise/resonance (they have a lot of resonant chambers in standard intake which I still have most of them (perrin intake tube only , removed sound tube) standard filter box and snorkel.
does not seem to be any consistent loss of fuel pressure when you hold it around 4000-4500 where noise is. It a long log but can be zoomed. 1.5 vishnu tune.
http://datazap.me/u/steve99/mountain...7-8-9-10-11-12