Ecoboost Performance Forum

Ecoboost Performance => General Discussion => Topic started by: jbrown9999 on February 02, 2018, 07:09:48 PM

Title: Removing 3rd cat?
Post by: jbrown9999 on February 02, 2018, 07:09:48 PM
So, by removing the 3rd cat, does the car still pass emissions?  Are there any codes it throws with that gone?
Is removing it legal in all states but CA?  In CA they probably get the death penalty for removing emissions equipment...LOL!

Any guidance would be helpful.
Title: Re: Removing 3rd cat?
Post by: SHOdded on February 02, 2018, 07:14:20 PM
Yes it should pass emissions with the 3rd cat absent.  Only the primary cats matter.  Visual inspection or tailpipe inspection might end differently, but an OBD check will be no issue.
Title: Re: Removing 3rd cat?
Post by: jbrown9999 on February 02, 2018, 07:27:29 PM
Thanks.  After going through the sound posts, that seems like a decent low cost step.
Title: Re: Removing 3rd cat?
Post by: AJP turbo on February 02, 2018, 07:32:45 PM
It would be illegal federally but the good thing is you don't typically see federal agents citing people for tampering with emission control devices
Title: Re: Removing 3rd cat?
Post by: StinkinLinkin13 on February 02, 2018, 09:28:39 PM
You can just gut the thing and leave it in place. Messy but easy. I personally would advise on keeping the resonator however. Its straight through and causes no restriction. I made the mistake of getting rid of mine and boi does it resonate (boom) at certain rpms (2,500). No codes or any issues there as well.
EhPortal 1.39.5 © 2024, WebDev