[A4] Do you want to
philter at myway.com
Fri Jun 17 20:17:23 EDT 2005
I always wanted my A4 chip on a socket, mainly for purposes of troubleshooting when a problem came up. I recently ordered a handful of parts for this modification. Here's how it went. On the ECU, I de-soldered the performance chip (I understand some earlier A4's come with sockets already). I soldered header sockets (a strip of female plugs with surface mount feet) onto the ECU board. Then I changed the legs on the performance chip, so that the chip would have "fresh" legs (never solder). My chip was a small pcb with a few components on there that already used header pins to attach to the ECU. The performance chip was now ready to install into the header socket. With the stock chip, I used some more "fresh" legs, and assembled them thru bare pcb (Vector board, .050 spacing), and voila stock chip on a pcb that fits into the socket. Now I can switch back and forth easy as pie. I just thought some others might be interested in this modification. Sweet freedom for less
Disclaimer: Proceed at your own risk. If you do not know how to solder SMT (surface mount technology) then I would not recommend that you try this. I did this to my 2001 car, and if your 2005 $40k car dies, you're on your own. If you ruin your $500 chip, or your $900 ECU, then you're on your own too. If you don't solder properly, you're on your own. You assume all responsibility. Good luck.
Parts from DigiKey
V1140-ND - PC Board .05 Space FR4 4.0x6.5
ED1150-ND - Conn Socket .207 50pos .050 SMT
ED8250-ND - Conn Strip Header 50pos .050
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More information about the A4