Has anyone replaced their stock mufflers with the Flowmaster series 44's. I want my 06 SC to sound better but I do not want it to rattle windows when I drive by. Any other ideas for muffler replacement?

 

I think most of the members have put the Blitz exhaust on. I believe it give a throatier sound but still allows the car to retain its Lexus feel.

I took my entire cat back off and replaced with a single flowmaster. I have the dreaded resonance at about 1800 rpm but I like how it sounds like the Ford 302.
I think I may experiment with putting a crossover pipe after the muffler to see if I can eliminate the resonance.

 

Unfortunately not possible in CA where I live. I will look into the Blitz. Thanks

 

"Cat back"....I meant the exhaust behind the catalytic was replaced. I believe that is still legal.

 

Where in California are you located? We are having a meet very shortly (see top of sticky) and you will be able to see/hear in person the various exhaust options available.