I disagree.The Viper sounds right for a 10 cyl motor.The sound of a 4,6,8,10 and 12 are different.You will get used to the sound of a 10.Kind of wicked sounding.4's buzz,8's burble,6 & 12 tend to be melodius and a 10 is just different.It will never sound like an 8 or 12.Listen closely to the next F1 race.All 10's.Kind of like a wicked screech at that rpm. Bruce