I want to get a universal magnaflow muffler. This is going to have a 2.5 inch offset inlet and a 2.5 offset outlet to match the current design of my pacesetter muffler.

Is the magnaflow a flow through design with not restriction what so ever?

My plan is to use http://www.magnaflow.com/03cat-back/03aluminized/03aluminized.htm Part# 11236 or 11266 depending on my measurments of the pacesetter muffler.

Any help or suggestions would be appreciated.

When my car was being used by Magnaflow to design their latest catback, I was talking to the engineers about that. All the designs are very low restriction, but it looks like the ones you are looking at have offset input/outputs - so they aren't straight through. It's slightly more restrictive design than straight, but does much more for sound properties. I think you're making a good choice. My magnaflow cat back has a similar muffler design and I love it.

As long is it is a 2.5 inch pipe that connects the inlet/outlet. I just do not want the exhaust to flow into a chamber etc. This is a restriction that I do not need. An offset flow through design is exactly what I am looking for.

My wastegate is dumped to atomsphere anyway, which requires less tasking on my exhaust system.

thanks for the reply