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PostPosted: Tue Aug 02, 2005 5:57 pm 
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Joined: Fri Mar 25, 2005 5:59 pm
Posts: 137
Location: Porto
Hello ppl,
I wanna know where is the ecu, to see if my car that I bought has a chip already, and if not I wanna know if there is a possibility to use a socket to easily change toms rally chip (best chip to run hard!!!:)) and a chip with original mapping (where I can find this??) because here in portugal we have an anual inspection that measures emissions and noise that I suppose if I use toms chip they will not accept my vehicle.
If there is someone with pics to show me how hard is a chip installation please post.
Thanks to All.


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PostPosted: Tue Aug 02, 2005 6:27 pm 
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Moderator & FAQ King
Moderator & FAQ King
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Joined: Wed Apr 09, 2003 6:22 pm
Posts: 6460
Location: Vancouver, BC
keywords: FAQ, ECU, removal, location, inspection, EPROM, chip
The chip (an EPROM) is soldered to one of the circuit boards inside the ECU. If it has been replaced with an aftermarket chip, the chip should have an IC socket underneath it.

The ECU is located directly above the under-dash fusebox. You can see it on a MK3, if you remove the left side speaker grille.

To remove the ECU:
• disconnect your battery
• remove the mounting bolts for the fusebox (10 mm x2)
• pull the fuse box out of the way
• remove the mounting bolts for the ECU (10 mm x3)
• wiggle ECU out of dashboard
• disconnect ECU harness connectors (they're all different sizes and polarized, so they only go in one slot, one way)

To inspect the chip:
• remove the cover screws from the ECU case (Phillips x4)
• remove the circuit board mounting screws (Phillips x6?)

You have a factory chip if:
• the chip is solder to the circuit board
• the label has a foil sticker with some dot matrix printing on it
• the label features text like:
"SKBA102"
"FI021022"
etc.

You may have an aftermarket chip if:
• the chip is mounted in an IC socket
• the label is a paper sticker with inkjet printing on it
• the label features text like:
"occ racing"
"rally performance"
"rally spec"
"stage 1"
"stage 2"
etc

_________________
jaguar,vettes&sprints wrote:
...can you inlighten me about lihtan's
( miracle pour hole)
maybe a picture Thanks


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