Im looking for some one that has hollowed out there RT cats . Wondering if it has improved or got rid of the tinny rasp at certian rpms .

 

Why would you hollow them out after paying the money to ge them? May as well hollow out the stock ones and save yourself a lot of money.

--wes

 

I thru the stock ones away .Was looking for some one that had done it to see if the dam tinny rasp went away . Maybe some one that had had them go bad and just hollowed them out .I cant stand the tinny sound and looking for a fix...thats all

 

Ahhh....gotcha. I got my XERD's installed and they kinda annoy me as well. Luckily I kept the stock stuff so i can switch back if I want.

Maybe you could just trade those to someone for their stockers and a bit of cash and hollow those out.

--wes

 

I gutted mine after I had fuel dumped onto them when working on the car...

the sound is deeper then other test pipes because of the bubble in the piping where the catalyst used to be...

 

Any CEL lights when gutting stock cats?

 

nope.. but if you gut the stock cats your just creating a large area for the air to tumble and flow would be not very good at all..

i gutted the cats on my last car... but the cat's were nothing like the size of the oneson thez...

 

Did you have RT cats on or stock cats , and what kind of exhaust ? Any of that tinny rasp ?

 

i just put gutted rt's and borla on mine.....no rasp, although i dont know how it would be with another exhaust

 

if you gut the rts your gonna have the most expensive set of straight pipes for a z. why not just get test pipes and sell the rts

 

not like it matters but when you gutted the cats did you notice a change in gas mileage?

 

i have a set of rts that i blew out (driver's side) and am wanting to gut them. do you have to take them to a muffler shop? will they do it? whats the cost?

 

take a long screw driver (very long) a hammer and a beer... and start pounding away at the catalyst on the inside...

you can also use the metal part of a paint bucket.. you know the handle a scrape away at the inside...


the stock cats are alot easier to gut on this car then most cars since they are a seperate part all together... but.. i would not recomend gutting the stock cats...

 

I was speaking with Random Technology about two months ago after my RT cats imploded after 600 miles... according to them, a person could pound on their internal catalyst with a sledgehammer and not do any damage.

RT was explaining to me that there is no way their cats could have experienced the type of damage as mine had, due to the near-indestuctible nature of their internals.

Well... that all seems to be not quite true if a few of ya'll have removed the internal catalyst with a hammer and screwdriver. And, of course, my driver side cat had completely imploded and the passenger side internal was loose inside the pipe.

PeteH

 

since puttin on the gutted cats and borla on mine.......im geting about 3 miles more to the gallon........theres almost no backpressure. I was going down a hill in 3rd that normally my car would kind of slow its self down.....now it actually gains speed, its like the car is freewheeling now.