What did you do to your WH/XH today?

[robertodonnell]

Could I please ask why you decided on the Flashlube item? I can't decide between it, Provent and the new Ryco one.

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[Windex]

Took it out for a wheel and it performed well with the auto no longer slipping now that it had a new filter installed. Had to plow my way up a rutted hill with the rear diff carving out a nice trench (wheel ruts were bigger than my 245/75s could manage). Had to roll back a meter or two each time and push a bit further forward. Some slimy hills where I just had to sink the boot and climb up slowly as there was minimal traction. Spent most of the day about 16PSI front and 18PSI rear, think I'll try going lower as was definitely struggling for traction sometimes.

The only issue that I managed to find (after pulling the codes at home) was that I appear to have some QD2 performance issues, not sure if its just the nature of the terrain I was covering or if they are a little tired after 220k kms.

C1421 - Rear differential clutch performance
C141B - Front differential clutch performance

Running fresh (15,000 kms or less) Penrite 80-140 oil in both front and rear.

[Windex]

Found a Unichip installed in my car when I was removing some panels to install a MDS light! Now I wonder what tweaks this thing is doing Seems that its wired for fuel and spark and perhaps something to do with Oxy sensors... oh why mysteries await me!

[Gojeep]

Nice find.

[Windex]

Originally Posted by Gojeep

Nice find.

Shes definitely operational, as unplugging it throws up all kinds of codes, but it does idle without it. It would seem there something in there that's tapped into the TPS as I got the throttle error light on the dash.

Now to either find a way to get myself the tuning software and cable or a friendly workshop to have a look at it. Would be interesting to see how it stacks up against the Superchips tune, which while I dont really notice any power difference it sure does fix the throttle response and change the transmission kickdown points.

EDIT: Also dropped a new battery into the old girl as the current was only lasting a week or so without a good highway run to keep it operational.

[robertodonnell]

As a wild guess, considering it's location and your codes, I'd suggest it's a throttle pedal adjuster. Software to change the drive by wire throttle speed of movement.

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[Windex]

From the little I've been able to find on the Q+ it looks like it's wired up to fuel and ignition and I suspect the oxygen sensors from the tracing I've done.