I presume you have tried to take it to 7,000rpm.............the feeling for this car is not a savage as the Vtec engines of the type r or euroR. 3,500- 4,500 is where the most torque is, then it picks up pace quite quickly through the revs. It feels like there are 3 stages to the engine, 1000-4500 rpm, 4500-6000, 6000-7200, the last thousand feels like typical old school vtec( wack) but it does change the engine note at 4,500 and again at 6,000.
the best fun you will have is gear two up to 60 mph, when you drop from gear 6 to gear 4 as you are over taking on a motor way at motorway speeds.
watch this and you will see what it should sound like as standard
http://www.youtube.com/watch?v=Wsfqd12Ldsg&feature=related