I have had my 2011 WRX 5 door Premium for about 3 months now, and I have noticed that there is quite a bit of road noise & a couple of rattles.
I am planning on doing a stage 2 kit after tax season, so I imagine that the cabin will only get noisier.
I have been thinking about using dynamat and do the entire interior of the car.
My questions are:
1. Is it worth it?
2. Do I do every square inch including the head liner?
3. Is this something I could do my self? or should I pay someone?
4. Are there any other products that would work as a substitute?
Thanks for your time