I dont know how the rest of the guys. I dont have exhaust yet.
When ideling sound like a hover,
when gaining boost pre 3k rpms like a MACK truck
when in boost post 3k rpms like figher jet.
for most part it is not the sound that gives you away. it is giant intercoller in front and if people paying attention oil coller in the grill.
However how it is sound with performance exhaust. i will let somebody else to fill in.