Headers question
Race Director
Joined: May 2004
Posts: 16,667
Likes: 1,209
From: Raleigh, NC
St. Jude Donor '15
They are supposed to come with extensions if you bought them new. They are needed for the install.
Hinston is famous for shipping extensions that are too short, just a heads up.
Hinston is famous for shipping extensions that are too short, just a heads up.
Last edited by schpenxel; Jul 26, 2016 at 11:17 PM.
Race Director
Joined: Dec 2013
Posts: 12,502
Likes: 3,631
Yes, will need the two Pre-02 extension cables.
The rear/post 02 sensors will be deleted (plug the threaded channels if you have any), and the rear 02 sensors will be deleted in the tune.
Hence the rear 02 sensors are only used to monitor the cats only, and with them now high flow cats well away from the head, the differential readings between the pre and post 02 sensors will not be great enough, and will just end up throwing trouble codes instead.
Hence the motor only needs the pre02 sensors to run in close loop (when not running open loop during WOT isntead)
The rear/post 02 sensors will be deleted (plug the threaded channels if you have any), and the rear 02 sensors will be deleted in the tune.
Hence the rear 02 sensors are only used to monitor the cats only, and with them now high flow cats well away from the head, the differential readings between the pre and post 02 sensors will not be great enough, and will just end up throwing trouble codes instead.
Hence the motor only needs the pre02 sensors to run in close loop (when not running open loop during WOT isntead)
Last edited by Dano523; Jul 27, 2016 at 01:55 AM.
Le Mans Master
Joined: Oct 2014
Posts: 8,673
Likes: 2,728
From: Atlanta GA
I installed my rear O2 sensors only for "looks" incase the emissions guy decided to do a "visual" inspection . They are turned off in my tune .
Just had to get my 1st emissions test , rolled into the station ,guy plugged in the OBD , ran the test , told me I passed and never even looked ..... so much for me worrying about that lol
Dave
Just had to get my 1st emissions test , rolled into the station ,guy plugged in the OBD , ran the test , told me I passed and never even looked ..... so much for me worrying about that lol
Dave
Last edited by Dcasole; Jul 27, 2016 at 07:46 PM.
