No performance increase, and;
Yep, screw the neighbors! But consider this first:
1. You are no longer in the circle of protection that good neighbors provide.
2. You are clearly announcing your schedule. When you leave, when you come back, and when you are getting close. Patterns are a very easy thing to establish. Makes taking revenge that much easier. BRAAAAP, “hey mike, hurry up with that special fertilizer, MR DIESEL is on his way”!
3. If you piss off all your neighbors, nobody will report the fed up neighbor cutting your sidewalls, tampering with your fuel tank, or adding metal shaving to your oil, or, my personal favorite, throwing ground spark plug ceramic through your truck windows. They will help him. Isn’t that what good neighbors are for? “Heck Jim, I was saving that jar of ground up ceramic for the next bad neighbor, but I guess you could have it”.
4. Brake system failure is just, well, tragic.
5. I know, your dog will keep those villains away. Not quite. The dog you have (I know, Pit Bull, grr, grr) will not alert neighbors because you allow the dog to bark and annoy them all night anyways. So, if one night the pupster makes a loud yelp and drops dead, nobody will care. Except you, and the dog of course.
6. Since you have clearly demonstrated that you go to work early when you wake up all your neighbors, and their kids, and their babies; your neighbors can establish what time you are asleep. Soon, all kinds of strange things are happening to your house and vehicles! Weird!
7. Now, your sleep patterns are interrupted!
So, if you plan to get a really loud exhaust in an urban area, make sure you spend the extra money on CAMERAS, and someone to monitor them.
Just a few tips from a guy that does not like to be woken up unless it is for a pre-work morning quickie!