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Possum Link zone editing

Reuben Horsley

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G'day, I recently just picked up a G1 Possum link, with an RSROADQ chip, but I'm using it for slightly unconventional purposes...

I have a BC3, which I chucked a spare EJ20D in, and in order to make it work, I ripped out the SPFI loom, and chucked in a spare GT loom I had laying around. Yeah, fun wee project done for under a hundy, how can one complain. But, the GT ECU wasn't making much power, with its rich and retarded timing tune.

Enter the Plink, picked it up the other day for cheap and have started tweaking, but zone fuel and zone igntion have only 6 rows, and the non turb can only go up to row 3, giving me only 3 tunable rows. Basically off throttle, up to about a third throttle, and anything from a third to full throttle.

It runs well enough as is, better than the GT ecu, after advancing the timing, but I'm wondering if I can edit the kpa values for the zones, i.e. shift the row all into negative pressure, so I can tune this hack with 6 rows, not 3.

Currently I only have a hand controller and I figure this wont be able to do that, but I'm thinking about buying a serial link (I already have a serial laptop with the software installed) and seeing if that can edit it.


And a second question, do the possum links require a wide band o2? Because I just bought it a brand new 3-wire o2 literally a week prior to finding the link!




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Hi Ruben

Nope the row spacing is fixed so you are stuck with the 6 rows total and only 3 for vacuum.

Wide band didn't really exist back in the day of the Possum link. It is able to take a narrow band input but its not a must have.

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Ah bugger, I'll make do with what I have then, guess that's the motto of this wee fun build, so only fitting!

Thanks very much, I've been very impressed with the level of support you guys have, even for the ol G1's, def has sold me on getting a G4 for the PBMS built STi in the garage when the time comes!

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  • 1 year later...

G'day again. I was just up at Flatnats last weekend, and I forgot to pic the brains of the link chaps that came up and visited about this... One of the guys there, Steve, with "STI4ME" mentioned he had a G1 link that had been flashed to G2 (I may have misheard though?). He's had this car for a long time now, I'm wondering if this is still a a happening thing, or if it was only done back in the day? I'd much rather pay you guy's to get my wee G1 updated, then go find a G2 or 3 online... Sadly getting even a G4 storm is out of my league still

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With the G1s they can only be upgraded to the last firmware that they were built with.

The is a micro change and the unit needs to come in for it to be done. It will get a full check over at the same time.

Main change was the introduction of PC tuning.

No ability to go to G2/3 as these were very different hardware wise.



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