Boost Wire Install
After removing the cluster you see 3 connectors Blue, Grey and Green for this step we will need the Grey connector with the plug facing us. To the far left top is pin 1 far right bottom is pin 32 (bottom is the purple slide)
Pull the purple tab straight off the connector pulling the inner white plastic out from the shell. Make sure to know the direction the inner white plastic faces as you could put it in backwards but common sense tells you what way to slide as your wires run out of the shell. With the white inner plastic facing you in the right orientation locate pin 32 (right far bottom) pushing in the new pin.
Make sure to solder and heat shrink as its the proper sure way of knowing you will not have to redo your work!
Running your boost wire through the dash up through the ECU where the factory wires are ran is the best choice as you're able to ziptie them together knowing that they are secure!
Removing the ECU is quite simple as there is 5 8mm bolts holding on the weather cover. Use a flat head screwdriver pushing down and out releasing the clip. You will need to cut the outer security shell that clams it together. ( Cut a line across the metal that covers the one clip and pull it apart separating the ecu from the shell making the plugs accessible . Be careful to not cut any wires or yourself!
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Once you have the ecu out and unplugged (Depending on model PLEASE CHECK DIAGRAM BELOW) you will find pin 101 of the ECU (Audi 2.7tt) small connector. FOR ME YOU CAN SEE WHERE I MARKED IT 4TH FROM RIGHT 2ND ROW IS MY PIN 101 FOR AUDI 2.7
Removing the inner plastic is done by unclipping to top part of the shell and pulling the purple clip straight out this releasing the inner plastics. This is very important to make sure what way these go back together please take a picture so you know the correct orientation that is goes!
After finding pin 101 on the small connector mine turns out to be a blue and white wire. At this point you can use a t-clamp personally I do not like to do this as it cuts your wire leaving a few strands for connection that can easily break or short out. Imo it is a better job by cutting the wires soldering them together and shrink wrapping it for a solid connection!
Finish by putting everything back together and ziptieing what needs to be so there will be no loose wires possibly causing it to break connection.