1. Are you talking about the tire chatter when turning at sharp angles at slow speeds? If so yes this is normal.
2 This is also normal. I bought a Corsa Extrem axle back and X pipe to make her sound like she means it. You don't have to go that far ... you could do just the axle back in Sport or Extreme or just the X pipe, or even go with another aftermarket exhaust.
3. There are a couple of spots near me that I lose signal, but they are the same no matter what vehicle I'm in. So that may not be normal.
4. Normal. Which the stock exhaust, after a few starts the inside of the outer tips will be black and the two inner tips will be clean.
So for the most part you're normal.
