Have you ever tried to look through a catalytic converter? You'll see that even high flow converters definitely hinder exhaust flow. But, you're right, a failed cat should flow less than a new one. So it does depend on whether the cat is good or bad.

As for me, my cat obviously works b/c my emission testing is barely on the charts in all categories.

 

I ran at the track hundreds of times before and after my test pipe and noticed no difference whatsoever. I got my test pipe May 2003 at the same time I got my warpspeed subframe connectors.

 

Maybe the extra weight of the subframe connectors, although only ~35 lbs negated the gains of the test pipe?

 

I didn't put them on at the same time I just purchased them at the same time. It took me quite a while to get the subframe connectors on.

 

haha, this guy roffled his waffles.

 

he smoke ummm big bong hit!!!!!!!!!!!! made him feel funny!!!!!!!!!!!!!!!!! LOL!!!!!!!!!!!!!now car super fast, +1 hamster pwr LOLLOL god i cant stop laughing!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!LOLOLOL

 

In fact I have. They are large in diameter for a reason, and if they are in good condition, they do not restrict airflow by any meaningful amount.

 

you have to remeber 95% of the people on here are senior citizens. thats why its maxima.org, not loudcar.org

 

Exactly, I'm not the one trying to say that it doesn't restrict flow by a meaningful amount. I just said you will definitely see a gain from removing your cat. I have proven that you can shave atleast a tenth of a second in the VE. I doubt many people's cars are as consistant as mine so I am able to accurately say that you can shave a tenth in the 1/4 mile. And I doubt the single catalytic converter in the 4th gen is any different than most other's.

 

i spent more time laughing at your post that his...

 

SyOp is a chick not a guy.

 

Now the special treatment will start. No offence to anyone.