2009 GT, need advice

[whitefox25]

recently purchased a new 09 GT. I want to upgrade the exhaust, nothing too crazy though. just want to give it a more aggresive sound. i was thinking flowmasters since flowmasters wont void my extended warrenty. any advice?

 

[mustang50v8]

recently purchased a new 09 GT. I want to upgrade the exhaust, nothing too crazy though. just want to give it a more aggresive sound. i was thinking flowmasters since flowmasters wont void my extended warrenty. any advice?

the s197 section would be of more help to you than any of us can unfortunately. they exhaust setup on the s197's are completely different than out cars.
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