RB25 o2 Sensor Simulate with LM-1 Wideband - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

*fliprayzin240sx* · 10-17-2012, 07:49 PM

I got an old Innovate LM-1 wideband sensor with a simulate narrow band out. I'm attempting to use it to completely take the stock o2 sensor out. From what I've read so far, pin 29 (Exhaust Gas Sensor) is the o2 sensor signal. If I disconnect the stock o2 sensor and tap my LM-1 into pin 29, would that work or would I get a check engine light and make the car go into limp mode? According Innovate, sometimes the ECU would sense that its not seeing the heater wire on the o2 sensor and that would trigger it to go into limp mode. Just want some suggestion, ideas or info if anybody has done this before...

4x4le · 10-18-2012, 12:21 AM

I have never seen a non working o2 sensor trigger a limp mode on a obd1 nissan.

If the factory o2 sensor works, leave it be. I have simulated them with lc1's and it works ok but not as good as stock.

The lm1 is kinda bulky, more of a tool than a perm install sensor but do what you like. I have seen people perm instal them before.
Just make sure it is always on when the car is running or you will hurt the sensor, fast.

*fliprayzin240sx* · 10-18-2012, 11:03 AM

I was considering this just so I can knock 2 birds with one stone kinda thing. I think the stock o2 sensor I got now is either bad or going bad. Gas mileage is sucking in the range of 17 mpg. I got a wideband that I wanna use, figured I could slap it in the OEM spot. This would save me the trouble of getting a new OEM sensor and having to reweld a new bung further down the downpipe.

I think I'll just get a new bung welded in...

4x4le · 10-18-2012, 11:21 AM

Yea you want the wideband a little further away from the heat and you will be able to see if it in fact is not running right at idle and cruising speeds.

Innovate widebands simulating a narrowband seem as if they would have an advantage but for whatever reason I never seem to be able to make the nissan ecu react as fast with them as they do with oem sensors, even when playing with logworks.

Like I have said, I dont care to do it if its because the o2 sensor is going bad, but I could care less about the fuel economy on my fun cars.

*fliprayzin240sx* · 10-18-2012, 03:14 PM

Quote:

Originally Posted by 4x4le

Yea you want the wideband a little further away from the heat and you will be able to see if it in fact is not running right at idle and cruising speeds.

Innovate widebands simulating a narrowband seem as if they would have an advantage but for whatever reason I never seem to be able to make the nissan ecu react as fast with them as they do with oem sensors, even when playing with logworks.

Like I have said, I dont care to do it if its because the o2 sensor is going bad, but I could care less about the fuel economy on my fun cars.

Gas mileage is my motivation on it. Barely hitting 220 miles on a tank of 93 [email protected] 3.90 per gallon suuuuuuuuucks!!!

mantas · 10-18-2012, 03:25 PM

Quote:

Originally Posted by fliprayzin240sx

Gas mileage is my motivation on it. Barely hitting 220 miles on a tank of 93 [email protected] 3.90 per gallon suuuuuuuuucks!!!

That seems about right lol. I get about 220 for every 10 gallons. But thats if im easy on, otherwisw its in the 150 range

4x4le · 10-18-2012, 03:33 PM

Quote:

Originally Posted by fliprayzin240sx

Gas mileage is my motivation on it. Barely hitting 220 miles on a tank of 93 [email protected] 3.90 per gallon suuuuuuuuucks!!!

assuming you run almost out, thats 18mpg but Im guessing your filling up at about 10 gallons so thats 22mpg. It could use some work though because I was getting 18mpg on e85 in my sr not even trying (driving like a dickhead with a fast car) when I was in it.
I got 30 on gas on the interstate.

What kind of air fuel ratios are you running when maintaining speed?

10-17-2012, 07:49 PM	#1
fliprayzin240sx Man w/ CTSV & a Car Seat Join Date: Aug 2002 Location: Tampa Posts: 17,998 Trader Rating: (19) Rides Gallery: fliprayzin240sx Feedback Score: 19 reviews	RB25 o2 Sensor Simulate with LM-1 Wideband I got an old Innovate LM-1 wideband sensor with a simulate narrow band out. I'm attempting to use it to completely take the stock o2 sensor out. From what I've read so far, pin 29 (Exhaust Gas Sensor) is the o2 sensor signal. If I disconnect the stock o2 sensor and tap my LM-1 into pin 29, would that work or would I get a check engine light and make the car go into limp mode? According Innovate, sometimes the ECU would sense that its not seeing the heater wire on the o2 sensor and that would trigger it to go into limp mode. Just want some suggestion, ideas or info if anybody has done this before... __________________ If you think Zilvia has too many assholes... CLICK HERE!!!

10-18-2012, 11:03 AM	#3
fliprayzin240sx Man w/ CTSV & a Car Seat Join Date: Aug 2002 Location: Tampa Posts: 17,998 Trader Rating: (19) Rides Gallery: fliprayzin240sx Feedback Score: 19 reviews	I was considering this just so I can knock 2 birds with one stone kinda thing. I think the stock o2 sensor I got now is either bad or going bad. Gas mileage is sucking in the range of 17 mpg. I got a wideband that I wanna use, figured I could slap it in the OEM spot. This would save me the trouble of getting a new OEM sensor and having to reweld a new bung further down the downpipe. I think I'll just get a new bung welded in... __________________ If you think Zilvia has too many assholes... CLICK HERE!!!

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10-18-2012, 12:21 AM	#2
4x4le Zilvia FREAK! Join Date: Nov 2008 Location: Manchester, Tn Posts: 1,253 Trader Rating: (1) Feedback Score: 1 reviews	I have never seen a non working o2 sensor trigger a limp mode on a obd1 nissan. If the factory o2 sensor works, leave it be. I have simulated them with lc1's and it works ok but not as good as stock. The lm1 is kinda bulky, more of a tool than a perm install sensor but do what you like. I have seen people perm instal them before. Just make sure it is always on when the car is running or you will hurt the sensor, fast.

10-18-2012, 11:21 AM	#4
4x4le Zilvia FREAK! Join Date: Nov 2008 Location: Manchester, Tn Posts: 1,253 Trader Rating: (1) Feedback Score: 1 reviews	Yea you want the wideband a little further away from the heat and you will be able to see if it in fact is not running right at idle and cruising speeds. Innovate widebands simulating a narrowband seem as if they would have an advantage but for whatever reason I never seem to be able to make the nissan ecu react as fast with them as they do with oem sensors, even when playing with logworks. Like I have said, I dont care to do it if its because the o2 sensor is going bad, but I could care less about the fuel economy on my fun cars.