not sure if this is normal or not... hopefully I can have some of you guys with your stock setups try it out...
have the car sit at idle... rev the engine.. have the rpms move up a little and then immediately let go of the gas...
Does the exhaust have a sort of rumble to it or does the sound go down very smoothly?
Mine for whatever reason sounds like a V8 American car... the sound is a rumble (have no other way of describing it)... somewhat of a choaking sound...

anyone?

 

same here, does it when i rev kinda high and let it fall off while driving, was wondering if it was normal

 

Normal - What your hearing is unburned gases igniting after combustion in the exhaust manifold. They system is free flowing enough so that you hear this. I have always liked this "popping off" sound.

Lou

 

Yeah, it's normal and I love it, .

 

i was just bout to post this problem too.. when i put it on idle and i rev it and let go i cant "da duh duh duh duh dummmm" rumble.... good thing its normal... lol... and i just got this car a week ago too..

 

Messed up? That sound is yummy.