any loss of power with high flow cats?

[hillman]

This has been probably answered, but has anybody experienced a loss of power from taking the stock cats out and putting high flows in? What about going no cats? I want my truck louder, but I don't want to spend the money on a full exhaust.
Thanks for the help

 

[latemodelracer2]

I have high flows on my built truck

 

[PhLoBuS]

my cats are punched out

 

[uncooked]

Went from stock 4 cats to 2 high flows.... Got twice as loud, felt like it picked up some power considerably!


Cut out the high flows for catless.... Got twice as loud yet again, feels like it picked up slightly yet again !

Catless will be VERY loud unless you have a quiet catback.

 

[jec1521]

I don't have any dyno numbers to prove it, but after I switched to Hi-flows my truck seemed to have less torque.