does anyone know which high flow cats are the best to get horsepower from... and that will also pass smog... i don't know about you guys but cali emissons suck a$$!!! let me know what everyone thinks and input is always great...

reason i ask is cause i am wanting to get a set of aam hight flows.. but not sure if car will pass!

 

let me guess what the next person is going to say.....

 

 

I don't think it will pass.

 

It begins with an S and ends with a earch right?

 

heh heh heh, yeah, do a thread search. this topic has been discussed a bunch. Don't expect the hp gains that they advertise. You may see a few horses, but not that many. The main reason to get high flow cats is to go with headers. This is because the stock cats sometimes don't hold up too well and shatter. Mine did just that durring a race with an AMG E55. Then again, some people have no problems with their cats. Anyway, good luck with whatever you decide.

 

Nismo

 

kinetix or crawford.