Found Amp in trunk; advice needed

[red4life5]

I bought my A4 in October and found an aftermarket boost controller under the dash in the drivers seat then found an amp wired up but it's unplugged from the battery. The sound is fine in my B&O. Not sure if hooking it up with the Audi amp installed will hurt anything or what else has been done. Should I hook it up? Should I leave it? Or...? Help is appreciated








2010 A4 S-Line Prestige

[van462]

Likely they had a sub box in the trunk. So unless you plan to add one, most likely not worth the effort unless you plan to replace the factory sub.


Edit- You may want to plug back in the battery vent tube.

[red4life5]

Likely they had a sub box in the trunk. So unless you plan to add one, most likely not worth the effort unless you plan to replace the factory sub.


Edit- You may want to plug back in the battery vent tube.

Where is that at? I didn't notice anything unplugged


2010 A4 S-Line Prestige

[van462]

Last picture, just to the right of the bottom 2 wires. The battery should have a hole on that side for it. If the battery has been changed often this hole has a plug that may not have been removed for the vent.

[red4life5]

Last picture, just to the right of the bottom 2 wires. The battery should have a hole on that side for it. If the battery has been changed often this hole has a plug that may not have been removed for the vent.

Just like this?




2010 A4 S-Line Prestige

[The Infiltrator]

Just like this?




2010 A4 S-Line Prestige

Yeah that's the tube that's supposed to be there to vent the battery overboard. You're good

[red4life5]

Yeah that's the tube that's supposed to be there to vent the battery overboard. You're good

Thank you. I was hoping you'd comment :D
Any other advice about the pre-installed sub or what is said is good?


2010 A4 S-Line Prestige

[The Infiltrator]

Thank you. I was hoping you'd comment :D
Any other advice about the pre-installed sub or what is said is good?


2010 A4 S-Line Prestige

That part I'm not sure about, sorry man.

[Dcferolino]

Just leave as is not unless your planning to add a sub


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