This may sound like an odd question, but I was wondering if there was anything wrong with only replacing one of the resonators on my IS350? I currently have the Tsudo axleback exhaust and love it's sound, but it's still a little too quiet for me. I have been looking at videos online and it seems like replacing both the resonators makes the car pretty loud. I am afraid that replacing both of them with the Aero AR25 resonators are going to make the car louder than I would like, but maybe just replacing one would get me the sound level I'm looking for. I know it sounds kinda odd, but is it perfectly fine to do? Or will it cause some sort of unevenness because of the way one side of the exhaust may be more or less restrictive than the other?

 

 

Pardon me if I'm wrong, but our cars only have 1 resonator right? From the secondary cats I thought the exhaust merges together. So I would take it you mean muffler? Else if it does have two resonators then I would say try it why not? The sound would be a little imbalanced left/right i could imagine

 

 

Well shoot... I'm not sure where I got the impression that there were two resonators. I think I made the assumption by the way people worded their posts, but you know what they say about assuming! Looks like I'm going to go ahead and get the one resonator replaced. Thanks!

 

Yep, stock is 4 cats, 1 resonator, 2 muff's.