So I was installing my new bhr coilpacks and I noticed some wires that were connected to nothing, lets play my least favorite car game - name that wire! Based on where the wires go through the firewall I am going to assume that its likely that they are not from the factory, but I could be wrong. I have taken some photos of the wires, and where they go through the firewall. The single wire with the blade connector had been tucked down near the coil packs but I saw nothing that it would plug into.

It is worth noting that this vehicle has a greddy turbo kit - I did not have the kit installed or install it myself and have very little history on the car.

Any insights you can give me will be helpful. Also if someone can confirm for me what that little white tube is for that also goes through that hole in the firewall that would be cool too. I am assuming its for the boost gauge that doesnt seem to work but Im not sure.

 

None of that is original. Is there a boost controller or something on the other end of those wires, in the cabin? An aftermarket ECU perhaps? That would be informative.

 

I don't fit well down under the dash to have a look. There is a boost controller that I believe came with the kit, as well as a timer that I don't yet know how to use. I will see if I can confirm whether or not those wires go to the boost controller.

 

Okie doke, after some contortionism with a flashlight I can say with some certainty that all but the wire with the blade connector definitely goes to this little box which is most certainly part of the boost controller I think. as for the other wire im still not sure where that terminates.

 

It kind of begs the question though how is that meant to control anything if those wires go nowhere?

 

Yep that's the boost controller. I imagine the connectors in the engine bay should connect to a solenoid in the wastegate actuator line. If the project was finished ... it looks like they're way too short to reach there.

I would try to get some info from the seller or otherwise about how the ECU was tuned for boost, what injectors are in there, etc. Unterminated lines in the boost controller are not comforting :/

 

Not comforting at all. Unfortunately I have no way to contact the previous owner to get anymore information, I found this at a dealership online through the USAA car buying service and the people at the dealership were clueless. How would I go about determining that information on my own? At the moment I am not driving the car, it was acting like it had a spark issue, you could hear it stumble usually over 6k rpm and then lose power intermittently. I assumed that there was a high likelihood that the coils were original equipment and have set about replacing them and the plugs and wires, but now given the so many unknowns with this turbo setup I imagine there could be any number of things amiss.