I have a Lancer Ralliart with aftermarket piping. I was wondering if anybody could tell me stock piping diameter of an 05 Lancer Ralliart. I want to undo what was done back to stock. I also need a cat converter, that happens to be gone, as well.

I have a Lancer Ralliart with aftermarket piping. I was wondering if anybody could tell me stock piping diameter of an 05 Lancer Ralliart. I want to undo what was done back to stock. I also need a cat converter, that happens to be gone, as well.


The size is a 2 1/2" and don't worry about he cat converter it runs better without one. Why do you want to change it back to stock?

I don't think the stock piping is 2.5, because it's currently 2.5 in., the person i got the car from changed the stock piping, removed the cat, and installed a TenzoR Universal Exhaust tip. My plan is to bring the piping down to 2 in., put in a hi-flow cat and change the exhaust. I want a cat on the car because the noise is bad, even while cruising.

I don't think the stock piping is 2.5, because it's currently 2.5 in., the person i got the car from changed the stock piping, removed the cat, and installed a TenzoR Universal Exhaust tip. My plan is to bring the piping down to 2 in., put in a hi-flow cat and change the exhaust. I want a cat on the car because the noise is bad, even while cruising.

Thats wierd b/c i have a 05 ralliart with stock 2.5 exhaust. About the noise you could put a silencer in your muffler.

I think we have a misunderstanding. Are you measuring the size of the exhaust outlet diameter (muffler tip from the way end of the car), because I am talking about the exhaust diameter (the pipe that runs under the car from the header downpipe to the muffler.)