Results 1 to 2 of 2

Thread: Help tuning rear o2 sensors off

  1. #1
    Potential Tuner
    Join Date
    Dec 2023
    Posts
    1

    Help tuning rear o2 sensors off

    Hi,

    I installed long tube headers and deleted the cats on my 13 5.7 challenger. I am running front o2 sensors of course but want to leave the rear ones out. Can someone help me with what I need to do as far as turning off the rear o2s/running without cats in my tune?

    Thanks.

  2. #2
    Advanced Tuner Spray-Cam Hell-Ram's Avatar
    Join Date
    Aug 2021
    Location
    Yorktown VA
    Posts
    256
    Go into the Fueling Tab, and then click on the Oxygen sensor sub tab. On this page you'll find a section called "Feedback" and under that it will say "Closed Loop Enable". If you look under this heading, you'll find an input box that's labeled "ECT Rear"... Put 376 for your enabling temperature in this box. Obviously, it will never hit 376 degrees therefore your rear O2's will never enable. You're all set.
    "1MEAN16" Silver/Black 2016 Ram CCSB (4592lbs) NA 398ci Stroker
    +6cc Mahle Dome Pistons w/ 13.1/1 Compression on E85
    Forged 4.08" Stroke Crank, 224cc AFR Heads w/ Titanium 2.165"/1.65" Valves
    Custom Cam 220/238 .611/.589 108.5 LSA 108.5 ICL, 105mm Hellcat TB
    Ported Hi-Ram Intake, NXpress Hi-Ram NO2 Plate kit w/125 Shot(4 sec)
    Tx Spd 2" Long Tubes, ATI SD 15%UD, Ram TRX K&N CAI
    Dual 450 Pumps, Deatschwerks 1000cc Inj, Fuel Cell in Bed
    Built 8HP70 w/ 3800 stall/Detroit Tru-Trac/410 Gears