glasspack flow direction

Just ordered a glasspack for my Chevy. Don't know which direction to install it. If I look inside, I see all the small "louvers" (don't know what else to call them). They all open one direction. Do I flow the exhaust into the louvers, or over them from the opposite side? Thanks.

 

over them from the opposite side

 

I've always been told to flow them into the louvers to get them to act like a muffler, over the louvers to make them act like expensive straight pipe.
rick

 

There should be an arrow to show you which way they flow...... ------>

 

Depending what kind of sound your after. Will be mellow if directed into the louver, louder if you go over them.

 

Gotta give me a little more credit than that. No arrow, that's why I'm asking.

 

Just like asking someone which way did he go ? They use both arms and point out he went thata way < >. Into louvers is the way it goes.

 

HAHA, same question I asked....DER!!!!

 

I’ve always run them over the louvers for less back pressure and more music…

 

Into the louver is quieter but will burn out much much quicker !

 

The burn out real quickon an engine break in

 

I had header mount Cherry Bombs.... So it was obvious...

 

new ones have holes, not louvers

 

But this is an old thread

 

I put one on the right side with the louvers facing forward and one on the left with them facing backward, my car pulled to the right under heavy acceleration.

 

One hole towards the engine
The other away from the engine