Dynomax Super Turbos Suck

This is a normal layout of "Turbo" mufflers and the down size in pipe diameter is a bummer, but, also a normal thing. Most mufflers are like this. Also note how some makers or models willl state, "Same tube size though out the muffler" in an ad?

I have used the Hooker Ultra Flo's in the past. Same as the one you have on the car now. You can see right through to the other side. Pipe size remains constant.