Just thought I would throw some pics of the ECU Dis-Assembled as the novice may not know how it comes apart

Here is a Linky for How to Install a J3 Chip by TI Performance http://www.tiperformance.com.au/Technical/Installing%20a%20J3%20Chip.pdf but doesnt show the ECU apart

Top with scews ready to be removed


Top Cover Removed - you can see the 6 Screws that have been removed


Bottom


Bottom Cover Removed


Dirty J3 Terminal


Dirty J3 Terminal Close Up
]

Other Side of Dirty j3 Terminal with a bit wiped off


CLEAN J3 Terminal


Other Side of CLEAN J3 Terminal

Good pics! Got one of you scraping the lacquer off? It still manages to get a lot of people!

Jason

Nah i didnt take one Maybe next time..................

The stuff you can see is the easy bit - but the clear laquer underneath is where you need metho and the screw driver

You can see a lil bit of crap left over in one of the pics but that was cleaned up as good as the other side before re-fitting the J3 Chip to the new ECU

Maybe a good tip to add would be to keep removing the lacquer until the connector stripes become copper in colour.

Because I was being really cautious, i removed some lacquer and the strips looked silver and shiny, So I 'thought' I was done. But the strips still felt a bit sticky (like when you feel the lacquer over the circuitboard itself), So i decided to just keep on scraping, throwing caution to the wind.

I seriously thought i was starting to damage the strips because this stuff just kept on coming off and it still looked silver. I had another look at the PDF and was sure that the finished pic was copper looking.

Finally i broke through and the copper started to show and I took a sigh of relief. Works great.