I was in the market looking for a Honda Accord the last month or so, I looked at several, and most were not purchased due to the muffler/can whatever you call it addition. I declare if dealers had a clue as to what the average public thought about these things they would have changed them out, spent the few bucks. When I see one on a used car I think ragged out by teenager ( I have been guilty doing the same except with a 350 v-8 2.5" pipes with 3" chrome tips that were about 2' long) motor had real additions that boosted horsepower, but even then my buddies would add a set of chrome plated valve covers on a v-8 that would get them at least 50 horses. So it's always been that way, just a different road to get to the destination now.