Wideband AFR on the 930

[jwmarc]

I have searched the other 911 site for reference to the Innovate Lm-1 system.. On the 930 I have a few questions... Can the existing O2 sensor location on the pipe be used? I believe that I can use the existing location with the wideband sensor and feed the CIS ecu with the single wire take off.. Do I need to disconnect the air pump and all the plumbing to the cylinder head? Can the unit be permanently installed and who has done so... Anybody have a complete installation photo documented? Thanks..

[WydRyd]

The manufacturer recommends the O2 sensor is located approx 6" downstream from the turbocharger's discharge. If it's too close, the sensor could prematurely fail or give inaccurate readings. It should be after the turbo though, not before it on the header somewhere.

[NathanUK]

911rudy fitted his after the muffler as it was overheating before it.

[WydRyd]

Yup, I'll be fitting my LC-1 sensor after the muffler too, but as far away from tail-pipe opening as possible.

[RarlyL8]

I know a couple of people with them permanently installed. One has been in for 3 years. Both have the O2 bung directly after the muffler.

[hobieboy]

Mine is ~4" after the turbo. But then I don't have a muffler
When I was using a Borla muffler, the sensor was mounted right after the muffler (not enough room between turbo & muffler). It worked except at idle where it will read O2 basically.
I have mine for 3-4 years now. Still on the same sensor.
And mine is permanently mounted.

[KCPSG]

I have O2 sensor between the turbo and the muffler and getting accurate readings, I have also installed a heat shield. I have had no problems yet. I permanently installed the LC-1 and the AFR gauge is where the clock used to be. (Originally a Carrera Non turbo). If I had to do it again I would get the LM-1 over the LC-1/XD-16 combo.