I know this may sound odd, but I am trying to figure out the easiest/cheapest way to make my IS350 quieter. My gf has been driving this car as I have upgraded vehicles and she hates how loud it is. I originally had the Tsudo axle back and AR-25 resonator. I loved the sound but she wasn't really a fan. I swapped out the AR-25 resonator for the longest glasspack muffler available at my local exhaust shop since that is what they recommended to bring the sound level down. Well they were right and it was SOOOO much quieter after this and she was happy. Over the past 6 months since swapping out the resonators, it seems like it is just as loud again. She actually likes the look of the larger exhaust tips, as do I, because it does make the rear of the car look "cooler", so we don't want to change the Tsudo axle back part. The car actually wasn't even that loud with just the Tsudo until you revved it out. So what can I do to quiet up this setup that would be the easiest/cheapest? I don't want another solution that only lasts a few months and then needs to be fixed again, but I also haven't been able to find a new 2008 Lexus IS350 OEM resonator online. Any help is appreciated.

 

Anyone have any advice on the matter?

 

Try posting in the right generation. You are posting in the first generation model from 2001 to 2005..

 

You would think with how long I've been around here, I could at least get that part right...