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02-23-2018, 08:43 PM | #1 |
Scooby Specialist
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Innovate MTX-L Plus eating sensors
Good day, I installed a MTX-L Plus in late July.... in my winter vehicle... car was in storage until late October.. I have 5K miles on it sense installing the MTX and have gone through two sensors.
The MTX-L is installed in my 04 Forester XT (4EAT), I am running 14.7 AFR in normal cruise and 12/1 WOT with Meth/water 50/50. The sensors read fine for couple thousand miles and then it acts up... It goes into CAL mode when engine is running then offers E8 error code. Anyone else having issues with this model ? BTW.. I have one of the first wideband units (LM1) in my STi and it never has issues like this.. The sensors last several years unless I run leaded fuel through them... Tnx. Jeff
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02-24-2018, 09:12 AM | #2 |
Scooby Specialist
Member#: 344329
Join Date: Jan 2013
Location: Summit County
Vehicle:2008 Wrx, 6mt |
Mines been fine for couple years.
50/50 meth summer, 75/25 winter. 25psi pump91 |
02-26-2018, 11:10 AM | #3 |
Scooby Specialist
Member#: 385256
Join Date: Mar 2014
Chapter/Region:
NESIC
Vehicle:'18 Giulia QV '21 Giulia Q4 |
Yes. I have an MTX-L. And am now going to have to get my 3rd sensor. I have read about other people having issues with them as well.
I had a bosch 4.2 that originally came with it die. It started reading erratically around stoich but was OK when lean or rich. I dont think it ever 'died' though. I upgraded to a 4.9 and it died recently. It started with a little bit of fluctuation then reading a little lean all the time before reading E8. now its totally borked and reads E2 all the time. The 4.9 started dying after I cleaned some salt out of my engine bay. I have a suspicion that moisture or soap might have gotten in it, however I never sprayed the sensor itself. If I had to do it all over Id get an AEM, because on top of it all wtf is the harness hard wired to the gauge??? |
02-26-2018, 12:18 PM | #4 |
Scooby Specialist
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Hummm, not good. I am trying to work with innovate to understand the problem. I have an old LM1 on my STi and have had no issues. Considering you tried different model sensors, I am suspecting something in the gage is off
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02-26-2018, 06:22 PM | #5 |
Scooby Specialist
Member#: 72829
Join Date: Oct 2004
Chapter/Region:
W. Canada
Location: Calgary, Canada
Vehicle:2006 WRX 2015 WRX |
LSU 4.2 or 4.9 sensor? Mounting location/orientation?
Innovate updated the firmware in the controller for 4.9 sensor a while back. Interesting read: http://www.nzefi.com/bosch-lsu-wide-...-applications/ |
02-27-2018, 02:07 AM | #6 | |
Scooby Specialist
Member#: 29292
Join Date: Nov 2002
Chapter/Region:
SCIC
Location: Orange County CA
Vehicle:2004 WRX wagon silver |
Quote:
although on my subaru I have a plx and that thing has run without problems for the last 3 years |
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02-27-2018, 06:13 AM | #7 | |
Scooby Specialist
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Quote:
4.9 sensor located in the top of the downpipe maybe 6 inches back from the turbo exhaust housing. Through discussion with Innovate the thought is perhaps the sensor is too close to the Turbo and it is taking too much heat. This is in conflict with the interesting read you linked up (unless the exhaust temp is over 1796F that is). I am considering moving the sensor down the pipe a foot or so and using the heat sink I got with my LM1 (which has never failed a sensor unless I ran leaded fuel). Another point Innovate made is if the power wire used from the switched 12V power source is not capable of handling 2 amps (this is the sensor heater demand) then the sensor can fail over time. Mine is using 12G wire so this is not the case for me. |
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02-28-2018, 03:56 AM | #8 |
Scooby Specialist
Member#: 6176
Join Date: Apr 2001
Chapter/Region:
NWIC
Location: Roy,WA
Vehicle:15 WRX, 04 wrb STi 85 wrb BRAT |
I have read that before, the O2 sensor should be at least 18 inches from the turbo outlet, even though all the downpipes have the sensor fitting right in the bellmouth, and that is where mine is at. They do sell O2 sensor spacers/coolers designed to keep a wbo2 sensor from burning out but they are around $60.
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08-04-2018, 12:04 AM | #9 |
Scooby Guru
Member#: 90539
Join Date: Jul 2005
Chapter/Region:
South East
Location: SWLA
Vehicle:My BOV goes COVFEFE! |
I run my sensor at the end of the downpipe, still hot enough and any sound/oscillation from the turbine blades will be a little weaker with the sensor further back. Many dyno tuners clip their sensor into the end of the tailpipe and it works perfectly fine. I don't see being further back causing an issue, especially if your exhaust has no leaks.
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08-04-2018, 07:58 AM | #10 | |
Scooby Specialist
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