ok here it goes...i have a D16z6 in my hatch and when im going down the highway 65-70 range it just drones for days. and i was wondering if there was any way to get it quieter in the car without dynamat(i cant put a silencer in this) but the thing is its not that loud outside the car and there are no leakes.o by the way its 2.25 crushbent from the headers back into my OBX axel back

 

do you have a resonator?

 

yes i have a resonator

 

There's not going to be a way to get it quieter without either: Changing it back to your stock exhaust, or a quieter exhaust setup. Or by getting a lot of Dynamat throughout your car.