Swapped from 40 series flowmaster to dynomax bullet on my 06. 3 inch si/so with 4 inch tip. A little louder, although I thought it would be even louder. A little deeper as well. Left same exit in stock location. Phone videos, so quality is not exceptional.
http://www.youtube.com/watch?v=5W5YYI3IFXw&sns
http://www.youtube.com/watch?v=ypxWxVg1Oa4&sns

 

It will get louder as it breaks in.

 

overall are you happy with it compared to the 40 series?

 

I didn't think the bullets had a break in period, but if they do and it gets louder that will be great. Overall I'm happy with the swap. May post up a cold start video tomorrow or in the next couple days.

 

Only been on since 10 this morning, so going off initial experience as of now. Will know with time. So far would say it is worth it and happy so far.

 

Yep, give her some miles and she will open up a little. Any muffler with a packing material will have some break in. 100% stainless packing will have the least break in, and fiberglass having the most.

 

Fantastic. Thought it was mainly the magnaflows/magnapacks that this applied to. May have to drive it more now to expedite the break in process.

 

should try a fly-by video if you have the spare time

 

Should have time tomorrow. Will try and do that. Cab noise is very minimal on my screw longbed. The muffler is near the rear axle.

 

Didn't get the fly by video yet, but should be able to later. I did get a cold start and rev video.
http://www.youtube.com/watch?v=od7X8EKhfJg&sns=em

 

x2. i had mine done in august and it sounds so much more mean now then it did then.

 

Already can tell a difference and I like it. Will have to get some new videos. Maybe Monday.