Test pipes
New Member
Joined: Oct 2021
Posts: 9
Likes: 0
From: NJ
Non-foulers in the front will hurt performance and fuel economy, they are only required in the rear 02 positions because those are used to monitor catalyst efficiency, so by using n/foulers, you’re slowing their response time and tricking the ecm to think the cats are present still.
FYI there is (or used to be at least) such a thing as “mil elims”, which are patch sections that go between your 02 sensor wire and vehicle harness similar to what Sundown is telling you to do. Either method will be a hit/miss proposition, but combined I’m sure will pretty much guarantee a solution.
FYI there is (or used to be at least) such a thing as “mil elims”, which are patch sections that go between your 02 sensor wire and vehicle harness similar to what Sundown is telling you to do. Either method will be a hit/miss proposition, but combined I’m sure will pretty much guarantee a solution.
I don't really know if it's identical for cars as it is for diesels but typically if you want to eliminate a code by way of software you have to modify the logic so it does not monitor the particular system. That would lead me to believe that the readiness monitor for the O2 sensors would need to be shut off which wouldn't help your case. That being said tunes are nice so I definitely recommend.
New Member
Joined: Oct 2021
Posts: 9
Likes: 0
From: NJ
I don't really know if it's identical for cars as it is for diesels but typically if you want to eliminate a code by way of software you have to modify the logic so it does not monitor the particular system. That would lead me to believe that the readiness monitor for the O2 sensors would need to be shut off which wouldn't help your case. That being said tunes are nice so I definitely recommend.
New Member
Joined: Dec 2006
Posts: 1,384
Likes: 244
From: Canada
Happy to help and good luck with it, usually a day or two of normal driving will have the monitor reset and passed.
And yes, you cannot turn off monitors in a tune to pass emissions, they need to be enabled to get a pass.
And yes, you cannot turn off monitors in a tune to pass emissions, they need to be enabled to get a pass.
New Member
Joined: Oct 2021
Posts: 9
Likes: 0
From: NJ
I figured this was the case, yeah we have a standard 50mi drive cycle like most other cars of the era, that's one of the few things I know for sure, I'll keep you guys all posted with my results!
Thread
Thread Starter
Forum
Replies
Last Post