Jump to content
SAU Community

Recommended Posts

I'm thinking about leaving my EGO sensor out & bunging up the hole in the dump pipe.

Can anyone confirm if the ECU will put up a CEL if the sensor is left unplugged?

I already have the sensor input to the ECU cut off & replaced with a modified signal from my wideband so there's no issue with closed loop running, just a potential issue if the sensor itself is monitored for actually being 'plugged in'.

I would try it out but my car is in pieces & will need to decide before putting dump pipe back on as to whether to leave it out or not (otherwise exhaust & dump needs to come out again :down:).

It's the dark green one shown loose in this pic (passenger side of intake plenum, closest to firewall)..

post-76144-0-51105200-1334624933_thumb.jpg

I would assume it is only checking the signal into the ecu, if you unplug it there should be no cel if you have cut the wire and plumbed the wideband's narrow output into it. Hopefully it doesn't monitor the heater current or something silly like that.

You could always fit the wideband bung further down the exhaust like they recommend if you have issues.

It only checks for a varying signal, ie above and below .5 volt. If there is no signal they usually default to .3 volt, this simulates a lean mixture and ECU will richen up mixtures. You have a crosscounting signal simulated so they will run happily on that. I done they same thing with my Tech Edge for years..

I would assume it is only checking the signal into the ecu, if you unplug it there should be no cel if you have cut the wire and plumbed the wideband's narrow output into it. Hopefully it doesn't monitor the heater current or something silly like that.

You could always fit the wideband bung further down the exhaust like they recommend if you have issues.

It was the heater current monitoring that I was thinking could cause an issue. The wideband sensor has been working fine for ages & sending the narrowband signal to the ECU. It is located beyond the dumpipe but before the cat converter so happy with the location & operation. Standard sensor has been sitting there doing nothing but restrict my gas flow a little.

It only checks for a varying signal, ie above and below .5 volt. If there is no signal they usually default to .3 volt, this simulates a lean mixture and ECU will richen up mixtures. You have a crosscounting signal simulated so they will run happily on that. I done they same thing with my Tech Edge for years..

But have you pulled the sensor plug out of the loom on your V35? Our (M35) Stageas are vastly different to C34's & R33's. I've had no probs running on the simulated signal either, just unsure if our ECU monitors the actual sensor as being connected.

I suppose I could measure resistance / impedance of the sensor &, if I get a CEL when it's put back together, try a high wattage resistor across the socket to fool the ECU into thinking it's still there. But too much stuffing around.

Will someone just pull the plug & start their car already? :thumbsup: (I'd do it for you, you know I would!)

From memory there are a few different CELs related to the sensor. Craig unplugged his, and I only got one error code from it. There may be more as time goes on, I don't know, sometimes the ECU errors are based on not seeing sensor info for a specified amount of time. I think its based on the volts output of the sensor, not a actual resistance though- so by using narrowband from the WB, to the ecu, it should be fine.

That was my experience when I unplugged all of mine.

Thanks Alex. Craig confirmed an error when his was removed, but forgot to ask if his car had any signal going into the ECU to replace it, ie from a WB?. If not, then maybe I will be OK with it gone.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Kinkstah, no, coilovers aren't illegal, especially as a bolt straight in. The illegal part will be if they're altering suspension geometry beyond factory limits, or the ride height is not legal.   Sounds like the blue slipper just didn't want to deal with any later possibility of mods appearing on the car.
    • The problem has always been that coilovers are able to be adjusted, almost at any time, to be too low. Most people who ever get/got defected for/with coilovers were actually afoul of the minimum ride height rule. So the interpretation by cops/inspectors was always that it is pointless to allow numpty to raise his coilovers and get the car inspected/cleared, then just drop them back down again as soon as they get around the corner from the inspection station.  This led to the interpretation that they were illegal unless rendered such that they can't be adjusted (ie, collars welded to the body, that sort of thing). That may or may not have ever actually been the official line, but I'm pretty sure it's not considered to be a solution these days. Coilovers themselves fall under clause 3.2 b of that manual, because they are an "installation of a variable ride height system" and they don't fit the exclusions in that clause (which point to air springs and other pneumatic adjusters). So, as per previous statements, they require engineering cert to be legal on the road. Once you have such cert, provided you do not adjust them outside the height range covered by the cert, you are OK. Without, you have an unroadworthy vehicle.
    • Here E10 is the cheapest fuel. And general advice is to not use it unless you hate your car. From what I remember it clogs up stuff in the fuel system or injectors?  With US/Canada being E10 across the board, does that mean that all fuel there is terrible?
    • Sorry, are coilovers ACTUALLY ILLEGAL in NSW? They aren't in Vic, as long as they retain 70% of stock travel and the car is above 100mm off the ground. Does NSW actually have a law making coilovers actually illegal? RWC/Blue Slip/Engineering people not knowing the actual f**king laws boils my blood. Demand them to point to the documentation that states a coilover is illegal. (it may exist in NSW ) Edit: I checked. They aren't. https://www.nsw.gov.au/sites/default/files/2021-02/RMS-infosheet-light-vehicle-modifications-manual-suspension-and-ride-height.pdf
×
×
  • Create New...