After a few hundred miles I have been noticing some torque drop at slow speeds with all the baffles out.
I put them back (4) except the top 2.
My low speed torque (power) has improved considerably and cruising rumble is quieter.
Looks like there is a drop in back pressure, even with the Cats left in, if you take all the baffles out.
So, 4 baffles in and I like the sound and power.
Still getting allot of compliments on these pipes.
Bill