Do I have to buy a tune to bypass CEL

[Wakesurfer]

For a full cat delete? Will I need to get some o2 sensors back in the exhaust setup and buy a tune so I can delete the light?

Any other way around this would be greatly appreciated!!!!

Current note on my Akra-knock off homemade header back exhaust-

dl=0https://www.dropbox.com/s/py4rbhcn9k...80p-1.mov?dl=0

[SAMM3Y]

You could try some anti-foulers for the rear o2 sensors if you can fit them. They're about $30 on Amazon. Worked on mine with stock tune and HFC's.

[pbonsalb]

Mini cat or restrictor or extender probably won’t work for a full cat delete.

[tdott]

o2 simulators or you can try extenders but those tend to still cause CELs eventually.

[dpaul]

You don't need to buy a tune, which are quite expensive.

You can write (flash) altered calibration files yourself with relatively inexpensive tools like a KessV2 clone. If you don't want to invest the time to learn about the structure of these files and what to modify, just use this cheap, user-friendly app to modify the file for you:

https://www.ecuworx.co.uk/2018/04/01...tool-released/

Keep in mind that these alterations (the same as the ones in a tuner file) keep the CEL light from coming on by preventing ODBII readiness. Many states allow one flag to be not ready. So you pass inspection with Cat not ready as long as O2 sensor, sensor heater, evap etc are set.

[pbonsalb]

Aren’t there 2 post cat monitors?

[nycplumber]

Why not just get Alpines tune. It will get rid the CEL and add some HP and isn't expensive.

[Wakesurfer]

You can write (flash) altered calibration files yourself with relatively inexpensive tools like a KessV2 clone. If you don't want to invest the time to learn about the structure of these files and what to modify, just use this cheap, user-friendly app to modify the file for you:

https://www.ecuworx.co.uk/2018/04/01...tool-released/

Keep in mind that these alterations (the same as the ones in a tuner file) keep the CEL light from coming on by preventing ODBII readiness. Many states allow one flag to be not ready. So you pass inspection with Cat not ready as long as O2 sensor, sensor heater, evap etc are set.[/QUOTE]


Thank you that's great information! Thx to all your replies. I really appreciate it!

[Wakesurfer]

Originally Posted by nycplumber

Why not just get Alpines tune. It will get rid the CEL and add some HP and isn't expensive.

Can you show me a link to the tune? Thank you!

[Wakesurfer]

We don't have yearly inspection here in Alabama but I have to take mine to DOT for inspection go from salvage to rebuilt title..car was hit in front and deemed totaled ...no frame damage so I bought it

I have to have no lights on dash to pass inspection..

[buldogge]

Originally Posted by pbonsalb

Aren’t there 2 post cat monitors?

Yes...but, single readiness monitor for those (2) post-cat O2 monitors.

-Mark in St. Louis

[dpaul]

Originally Posted by pbonsalb

Aren’t there 2 post cat monitors?

Not sure what you mean?


Oh I missed the post above - nevermind!

[dpaul]

Originally Posted by Wakesurfer

We don't have yearly inspection here in Alabama but I have to take mine to DOT for inspection go from salvage to rebuilt title..car was hit in front and deemed totaled ...no frame damage so I bought it

I have to have no lights on dash to pass inspection..

In MA the inspection for a salvage vehicle to obtain a title is much more extensive than the yearly inspection required for normally titled and registered vehicles. They actually look at all kinds of things - if they spot test pipes, you're done for whether a CEL is lit or not.

[dpaul]

Originally Posted by Wakesurfer

Can you show me a link to the tune? Thank you!

alex@alpinemss.com

I don't have a tune from this source (or any other) but people seem to like it and it's 'only' $620 which is several hundred less than other reputable tuners