I have a high flow cat laying around and knocked out the honeycomb. Question i have is;

Since its not a straight pipe through, but more of a pipe that leads into a big open chamber and back to a pipe, would that cause enough turbulence to cause bad flow? Or would that big chamber in the middle have very little effect on flow?

Please answer from experience or knowledge. Guessing won't help ;p

 

even with the slight amount of turbulence caused by knocking out the honeycomb, itll still be less restrictive than a HFC