MTX-L spiking rich in TS but gauge fine - Miata Turbo Forum - Boost cars, acquire cats.

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Old 12-13-2011, 03:06 AM   #1
Oni
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Default MTX-L spiking rich in TS but gauge fine

Afternoon all

I have ran into an interesting issue. During my logging and attempted tuning my wideband is going really rich at times, this fks up my autotune. It has started doing it in the last week or so and ive been unable to work out why. My gauge seems to stay correct and when these super rich periods happen the engine etc stays the same so its just a false reading on that wire. ive recaliberated that output also to what Brain suggested to get the offsets correct. Also just did a run with all MAT as defaults and AE threshols set at 800kpa/s to count that out.

Set up

NA 1990 1.6
Innovate MTX-L wideband - 2 months old maybe 2k kilometers. Grounded to head bold
Reverant built MS2

Ive had to set alot of things to TPS < 100% due to no VTPS atm.

Id be much appriciated if someone could have a quick look over my log and msq for anything that might be causing this issue. Ive thought possibly a misfire might casue this but when driving i dont notice / hear anything odd. In that log u can see it happening on decel / accel and steady state.

Cheers
Scott
Attached Files
File Type: msl 2011-12-13_17.09.49.msl (1.32 MB, 37 views)
File Type: msq CurrentTune.msq (79.5 KB, 38 views)
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Old 12-14-2011, 04:57 AM   #2
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Fixed, weird connection problem with a connector i was using. Can be removed
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Old 12-14-2011, 09:40 AM   #3
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we'll leave it.

I was going to suggest looking at your wiring.
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Old 12-14-2011, 10:21 PM   #4
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Cheers, it goes to show that when u " know" something to still double check it. On my wideband i soldered a molex connector to it to make a mini harness so i could just unplug the whole thing if needed in the future, before posting i pushed the connecter and it was tight so i assumed it was all good. Later i went back through and unplugged it and found a little piece of plastic sheeting ( like kitchen cling film ) so pulled that and reconnected and all good.
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