Quote Originally Posted by willtill View Post
I was referring to felt back pressure during decel... not quite the "jake brake" effect... there is a little of it sensed with the stock OEM pipes... was curious about the free-er flowing Torque Loops and TBR's...
You just discribed jakes in one form or another.
Either way, the action forces the piston to work harder getting rid of the exhust gases.
hence you get the engine retriction and the braking action.
carry on,
Do as you wish.