Which one would be better, mind you this is a daily driver. I'm thinking high-flow cat, but a test pipe is usually cheaper and provides more power. But if I get a test pipe, don't I need a secondary 02 simulator or something like that? What does it cost? What high-flow cats do you guys recommend? Let me know, thanks.

 

I ran a straight pipe, and yeah, if I were you I would get something to emulate that ******* O2 so it doesn't fool the stupid ECU. GOD that was annoying...

 

did you ever have a problem running a straight pipe in california? i've been thinking about it, but i really don't want to call attention to myself. how'd it work out?

 

I'm no tree hugger, but get a high-flow cat and be good to the environment, especially since it's a daily driver. I'd recommend A Carsound cat, they outflow most cats on the market.
I sell them pretty cheap too.
Mark

 

*shudders* The worst kind...*shudders*

Anyway, I never had any problems with it, it was quiet as hell...

 

i hate the smell if you dont use a cat.

 

I have a straight pipe right now & in CA, but I'd strongly recommend a cat. Just the smell alone is enough to drive me nuts!

 

you can't run leaded gas with a carsound cat, can you?

 

what's a cat ?

 

i'd go with the 3" Carsound cat, though you'll sacrifice some power potential.
i'm using the 2.5" Carsound cat on my N/A+N2O setup now and have the 3" Carsound cat waiting to go on for my future turbo setup. they work great for the $$.

i'm no tree hugger but i do care for the enviroment.

 

i have an LS with a 2.5" straight pipe and a 2.5" catback... can't smell anything, just smells liek burnt gas/exhaust... no different than any other exhaust. I didn't notice a gain or decrese in horsepower, but then again i am still N/A.

ryan

 

i kinda like that smell......

 

im running the test pipe now...but think im gonna switch to the cat...its really loud at times

 

I am running a 3in Carsound cat. I couldn't take the exhaust smell everytime I got out of my car.