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3. Reassembly
3.1 Installation of Software
Before you can begin using your smart fan be sure that your smart fan tune is installed.
You may have purchased a MAF conversion with your smart fan, or a W.A.R. Chip.
Either way, make sure you are using the software that came with the Smart Fan to ensure
it operate properly.
If you have a WAR Chip, load the WAR Chip with the file that was provided to you.
1.
For e34 the ECU in the E-box on the passenger side of the engine bay (Upper
Side). Using a Philips screwdriver undo the four screws.
For E30’s open the glove box and remove plastic cover to expose the ECU
located on the top of the glove box compartment.
2.
Now the ECU will be exposed. Using a 10mm socket wrench, undo the two
10mm nuts.
3.
Unplug the ECU from its connector harness.
The Chip contains the software required for your vehicle to operate. Avoid high static
areas. Also avoid dropping the chip and spilling liquids on it.
4.
You need to take the metal case off of the ECU. There are tabs all the way around
the bottom side. Using a small flat screwdriver gently lift up the tabs to release the
ECU. Be careful not to bend the tabs too far as they may break.
5.
Once you have the ECU open and the chip side exposed you are ready to replace
your current chip. Carefully pry evenly on each side of the chip back and forth
until it is free from its holder.
6.
Take the chip that came with your Smart Fan and install it in place of the original
one. Make sure that you align the small notch (half circle) on the chip, to the
small notch on the ECU; this will insure your chip is installed properly.
You have successfully completed all steps required for the ECU. You can now
reassemble the ECU and glove box or E-box. You can now reconnect the battery.
