Rob,
For your STS, I would suggest keeping the stock cats. Random Tech makes decent cats (I would feel comfortable putting them on my sports car) but changing the cats can dramatically change the sound characteristics of the system. The exhaust note will typically get very raspy and high pitched. May not be the tone you desire for a high end sports sedan.
Thanks for the business and feel free to call/email us if you have any other questsions.
Regards,
GP
Quote:
|
Originally Posted by Rob S As the title states, which is recommended with your system? Or is factory as good as it gets? I have the exhaust for my 99 STS, just waiting to figure out which cat before I install. TIA |