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RE: Side effects of turning off O2 sensors for O/R pipe.
i installed my o/r x about 6 months ago,i tried the mil elim's with no success,light did not bother me too much but i did finally get a tuner and now the light is gone,yepee!
the o/r x adds a good amount of hp for the cost of the pipes.i dynoed my stock car with no tuner or cai at the time,only mods were the o/r x and mid mufflers.272hp, a buddy of mine did his car same day,he had cai and tuner with a stock cats,he was only 8 hp more than me i think.so they are worth it imo,plus they sound awesome!!
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2007 GT
5 Speed
Forged and Turbocharged
Quote:
Originally Posted by tampa07gt
Next week Willy's going to wire his electronic throttle to the fan relay and run it off his on board LAN to NASA to ensure he runs at the correct temp based on real time global atmospheric conditions. Oh yea after he makes his own installation tools
RE: Side effects of turning off O2 sensors for O/R pipe.
Quote:
ORIGINAL: Blue Meanie
Quote:
ORIGINAL: 2007CalSpec
Quote:
ORIGINAL: davesiar
I have had my O/R Prochamber on for almost 2 years now, and have not seen the check engine light. I just bought the MIL eliminators and added them too the o2 sensors.
I was going to buy the MIL elims but I have an '07 andeveryone says they don't work for '07 & up. Gonna need a tuner to turn off the O2's.
"Everyone" is wrong in this case. I've been running MIL eliminators on my 07 with an o/r x for the last 4 months with no CEL's.
Unless you told brenspeed not to turn off the 02s, they are turned off in the tune already, so the mils are doing nothing
RE: Side effects of turning off O2 sensors for O/R pipe.
Yes, I had Brenspeed leave the rears on for emmissions testing. In NY, we have the OBD II test where the scanner is connected to the OBD II diagnostic port. If the rears are turned off, it will show on the scanner. The rears are still on and the MILs have taken care of the problem so far.
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07 Vista Blue GT Deluxe M5, FRPP 4.10's, Brenspeed 93 tune, Steeda CAI,LCA's+UDP's, FRPP ceramic shorties, Bassani o/rx, Borla Stingers, Spydershaft, Hurst STS, CHE k member support w/torque limiters.
RE: Side effects of turning off O2 sensors for O/R pipe.
Quote:
ORIGINAL: acascianelli
My question was whether the PCM can still detect if the motor is running rich or lean if the rear O2 sensors are disabled?
Also, is there anything I should be concerned about driving with an O/R midpipe through the winter?
only purpose of the rear 02's is to make sure the cats are doing thier job,they have nothing to do with any sort of tuning of the car or anything at all,they just let you know when to replace the cats.rip dim b!tchs out!!
__________________
2007 GT
5 Speed
Forged and Turbocharged
Quote:
Originally Posted by tampa07gt
Next week Willy's going to wire his electronic throttle to the fan relay and run it off his on board LAN to NASA to ensure he runs at the correct temp based on real time global atmospheric conditions. Oh yea after he makes his own installation tools
RE: Side effects of turning off O2 sensors for O/R pipe.
Quote:
ORIGINAL: Blue Meanie
Quote:
ORIGINAL: 2007CalSpec
Quote:
ORIGINAL: davesiar
I have had my O/R Prochamber on for almost 2 years now, and have not seen the check engine light. I just bought the MIL eliminators and added them too the o2 sensors.
I was going to buy the MIL elims but I have an '07 andeveryone says they don't work for '07 & up. Gonna need a tuner to turn off the O2's.
"Everyone" is wrong in this case. I've been running MIL eliminators on my 07 with an o/r x for the last 4 months with no CEL's.
Maybe you got lucky and the MIL elims worked for you. I guess it's a hit or miss situation for '07 & up. It was Brenspeed that told me the MIL elims wouldn't work for my '07 so I've been living with the CEL on.
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3.55 gears, MAC Boomtubes, O/R Prochamber, Dynomax Race Bullets(resonators)>>Sound Clip, Tein H. Tech lowering springs, J&M LCA relocation brackets, Spohn adjustable panhard bar, Meter4it tail lights (chase mode), CCFL halo fog lights, 6000K HID headlights & fogs, Clear corners & side markers, Shelby 1/4 window covers in black, "Switchback" LED turn signals, 20x8.5/20x10 Tork Icon wheels, Toyo Proxes 4 in 245/35-20 & 295/30-20
RE: Side effects of turning off O2 sensors for O/R pipe.
Quote:
ORIGINAL: one eyed willy
Quote:
ORIGINAL: acascianelli
My question was whether the PCM can still detect if the motor is running rich or lean if the rear O2 sensors are disabled?
Also, is there anything I should be concerned about driving with an O/R midpipe through the winter?
only purpose of the rear 02's is to make sure the cats are doing thier job,they have nothing to do with any sort of tuning of the car or anything at all,they just let you know when to replace the cats.rip dim b!tchs out!!
100% correct. The rear O2 sensors are sometimes called CMS (catalyst monitoring sensor) sensors. The only purpose they serve is to "watch" the cats to make sure they are properly cleaning the exhaust gases. The off road pipe eliminates the cats and the rear O2's. Yes, the CEL will come on and stay on unless the rear O2's and the cats are in place.
RE: Side effects of turning off O2 sensors for O/R pipe.
Quote:
ORIGINAL: acascianelli
How does the engine determine if it's running to rich or lean then? Kinda off topic but I'm curious now.
The upstream O2 sensors feedback to the PCM the oxygen content of the exhaust. This data is used by the PCM to determine how rich or lean the engine is running. Optimum air/fuel ratio (stoic) is 14.7:1.
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RE: Side effects of turning off O2 sensors for O/R pipe.
