2 1/2 inch exhaust- will I lose power?

[Calabrio]

Same here- 2.5 inch from the 1st set of cats back, 3rd cat/resonator replaced with the dynomax 2in/2out internal x-pipe, and then 2.5" out to the back.

It's a pretty nice sound, those it's certainly louder... I love it around town... though it gets a bit tiresome when you're stuck on the highway for a dozen hours.

 

[Cobramarkviii]

I have the LMS Exhaust on mine and I've been happy with it, get alot of comments on it from people around here, sounds like nothing else out there, def power gain, and it looks sweet on the car to. I would Recommend it to everyone who has a Mark VIII, heres a sound clip of mine..

http://youtube.com/watch?v=GF4xDujXaSo

http://youtube.com/watch?v=pKOUYjR2cGQ&feature=related

 

[The_purple_lincoln_slayer]

Why Would u guys not want it loud? Shoot i would drive around with striaght headers if it was legal and it wasnt horrible for my car. i LOVE my flowmasters. There not horribly loud and i love that sound