Lets see how much RWH this size setup is capable of. I wanna know how far I can go without switching to 1 7/8 LTS and 4" CB.

 

I've hit 900rwhp before but it would of made more with a bigger exhaust.
Depends on the design and what engine combo on how efficient it is.

 

Now thats just insane. How much do you think could have been gained going bigger?
Don, im swapping my pacesetters and tsp ory for american racing headers and their y pipe. How much of a better design is the ARH? Both setups are 1 3/4 with 3" CB.

 

ARH is a better exhaust but i dont think u will see much of again .

 

I wouldnt expect much of anything just switching these setups. The main idea of getting these is so I could get the catted Y and gut them. Just in case they decided to put a mirror under the car it will "help" the idea I have cats lol. I figure the design should be better than the first setup though. Wish I didnt have to do this cause I spent almost enough for a cam install.

 

I Would not gut the cats cause there is really no big loss w/ them but u wont smell gas fumes anymore and your car will b legal but a little more quiet also !ARH r twice the price but nice and i have put them on my last 2 cars but only because the cars r new if i got another 4th gen i would do Pacesetters again !

 

Last time I had cats they were high flow dynatechs on my old 98z. I ended up swapping those for 2 straight pipes. I havent had a catted Y since and I love it.
My car was tuned with the pacsetters+tsp ory. Im afraid that if I dont gut these cats it might mess with my tune.

 

ARH cats flow great but i would ask Don if they will affect your tune @ all !