2002 Acura RSX v tec

I have a strange problem if im at a stop in first gear at idle, or driving in first gear with rpms below 3000 then hit the gas my vtec will not kick on, and if and when it does it cuts in and out losing power at 7000. Now on vtec honda motors they are designed to have the vtec kick on at 6000 all the way to 8000. If I drive for a couple blocks in first gear but stay above 4000 then hit the gas the vtec kicks on every single time but sometimes it cuts in and out around 7000. Now to make things more interesting none of the other gears (2nd-6th) seem to have this probem if I hit the gas the vtec kicks on and stays strong through entire powerband (6000-8000) on top of that there is no check engine light on. Now the car drives fine under normal conditions my problems dont start until I hit the gas, should I continue driving it or should I park it until problem is resolved