Since installing my N1 exhaust a couple months ago i've found that I'm saving money. This happens for two reasons.
1.) Drone between 3k and 5k rpm's makes my ears bleed and gives me a headache, so when I'm daily driving I tend to shift earlier than I used to. This helps my MPG's
2.) Drone between 3k and 5k rpm's makes my ears bleed and gives me a headache, so when I'm on the highway I set the cruise at 70 and not 75 or 80 and that saves me from the chance of getting a speeding ticket.
Everyone should buy one.. Drone is good for the pocketbook!!!