I cut the bottom off mine.....and today, i can hear that high pitch spooling noise very nicely load. Its like almost 0* degree or something.
For Paul: people remove their silencer boxes to hear the turboz soundz morez. I had mine off when I got the car but now have gp moto elbow.
There actually no data that removing stock box gives any increase in power. You actually make it worse by taking it off. There is more dirt getting sucked in to the filter and the stock ram air is actually functional. The best way to increase the intake sound and keep the filter clean is to just cut the bulge out and duct tape it.
Ohh mine is out and for good reason, but why cut the bottom off. I figure you would suck in water and crap if it were like that.
He means cut the bottom off and duct tape the hole. Leaving it in with a cut and taped hole helps pass the ram intake air through the fender to the filter.
Dave I don't think any have a different shape, also why do you need this so quickly or did I miss that?
Here is a pic guys. The 06/07's are a clear like color, not black! haha Lets finish this. This is off a fellow 07 STi. There!! I need that!!