Quote Originally Posted by Bio248 View Post
it applies on all vehicles. exhaust acts the same way, regardless of the power adder. however, turbo cars benefit from bigger exhaust because of the amount of boost they produce, therefore producing a larger amount of exhaust gases. because of the more volume of exhaust, the car is able to keep velocity of the exhaust with bigger piping. in our cars, we do not produce enough boost to make a difference so 2.5" is more than enough for anyone wanting an aftermarket exhaust.

so a 3" exhaust on a blown 3800 does nothing but increase volume and potentially LOSE power.
i gained 3whp when i switched to my 3'' cat back...

I literally have the same setup you do except my muffs are Borla and my headers are zzp... only time my exhaust sounds bad is above 5k rpm ill vouch for this setup sounding as good as you can get our cars to sound though!!!