Helical gears are definitely quieter than straight cut gears, but still make noise. Check out a car with a centrifugal supercharger. I've had two different Vortechs, one with straight cut gears (V1) and one with helical (V2). The straight cut were much louder, but the helical still had a decent whistle to it. The noise is a little more extreme because the gears are spinning really damn fast, but the same factors apply.
Originally Posted by SenorDucK
You've heard the OP's transmission then I assume? If not I don't see how it seems normal if you can't hear it. So many people are convinced it is the normal whine without ever hearing the possible noise in the first place.
The 'normal whine' is pretty damn loud if you compare it to a rwd or fwd car.
And the OP asked for people's opinions about a problem he was having, so we're giving them based on our personal experience. That's how a forum works. So go chastise people somewhere else.
Originally Posted by CrazyOC949
Right, but my car wines from 1-2 and even before I did the shifter bushings.
So did both WRX's I test drove. So did mine, from the day I bought it, especially under hard acceleration.