Exhaust mod.

[fyrfyter612]

Ok...I know this has been covered before in different threads but I need to find out. My '04 has a 4.6 in it. I want to removed the resonator. I was told by one exhaust shop that it is actually another converter and they can not remove it. I didn't think it was a converter because there are no O2 sensors behind it...only in front of it. Has anyone has this done and was there any affect on emissions testing?

 

[CALDWELL]

take it off fella... it will not effect your emissions testing... i took mine off on my 03 X, and didnt cause an issue...

as long as there is no sensor behind the ( RESONATOR ) then your good...

it will make your muffler sound better !, plus probably give you better MPG, and a small bit of power... since your freeing up the exhaust

 

[fyrfyter612]

That's what I was thinking...it's a resonator since there is no sensor behind it. But the one shop I took it to told me it's another converter and they can't remove it. And when u said no problems with emissions....do you have emissions testing there?

 

[CALDWELL]

yes PA has emissions testing...

passed with no problem

 

[fyrfyter612]

Ok...nevermind...just saw your from PA and since I used to live there I know you have very strict emissions testing.

 

[zerodevil]

!!!! STOP !!!! Here in alaska they do a visual inspection of your exhaust system, and i have heard that major modifications can fail your test. Talk to one of your IM techs about what is a pass fail. Worst case... you buy a cat...break the insides out, and have it welded in to pass the visual inspection...like me lol.

 

[fyrfyter612]

well....I dunno what I'll do because I believe they do perforn a visual inspection to make sure everything is there.

 

[rileyrs]

they shouldn't care if its removing a resonator, it does nothing related to emissions at all, simply removes some harshness from the exhaust note.

 

[fyrfyter612]

Yeah...that's the problem.....is it a resonator or is it a converter?

 

[Limited02]

Cut it off and tell a muffler shop to put a pipe in place. That's what I did and it looks great!!! Just tell them it had a bad hole there and you just wanted to save them time so you chopped it off

 

[fyrfyter612]

well....i'd do that but if it's an actual converter and the emission testing station does the visual inspection and doesn't see it then I'm up the creek so to say.

 

[Limited02]

If it's anything like my 02', it's a pain to see anyway. Here is a picture of how mine looks. You can see where the Y meets to form a single pipe(where the cat/resonator should be) and then it's off to the muffler. If anyone was just looking this over, they'd never know it was missing

 

[fyrfyter612]

I might just have to do that...LOL.

 

[explorinitup]

ok your truck should have 4 cats. two on each banks (left and right)4 o2 sensors. one o2 in front of each cat. you can cut the rear two cats out and not set a check engin light. thats what i did. now after that your exaust should collect after that muffler. than resinator a couple of feet befor the tail pipe ends

 

[explorinitup]

you should have somthing like this.maybe a little differ

 

[fyrfyter612]

Yeah...I know that if there is no sensor behind the cat/resonator it won't trip the light...just worried that they might notice it on the visual inspection during emissions testing.

 

[explorinitup]

hahahah got you. im a inspector here in virginia your best bet is to just gut them. im only requred to look to see it there in. not if they work . the body of the cat needs to be there

 

[CALDWELL]

there isnt 4 cats on the 3rd gen X's


there are 2 located on the Y-Pipe. 1 on each side, then once the Y meets a single pipe, there is a ( RESONATOR ) with no sensor behind it. then shortly after is the muffler...

that was the set up on my 03 X...

now with my 05 X, i was missing the resonator like so...

 

[zerodevil]

just hollow out that 3rd cat if some one one remove it for you, like in my case they didnt want to take it out... so i had them install a hi flow cat that didnt have any guts lol.

 

[Limited02]

Caldwell is correct!

Here's my drawing I did for another member and this is how the cats are on the 3rd gen Ex/Mountys The first drawing show's the part in question(blue) is it a resonator or cat? Regardless, I didn't need it so it's gone