I recently started doing all of my own mechanical work on my car. I got in an accident back in April or May, my car, a 2012 Honda Civic Si, hydroplaned and I hit a guardrail, and messed up my front end, however mechanically it was fine. I didn't have collision coverage, so I paid for it out of pocket. I decided that to help save myself money I would start doing my own mechanical work. I recently changed my MTF (oem honda fluid), my oil and filter (Amsoil Signature Series w/ oem honda filter), flushed my coolant and replaced with oem honda coolant, changed the spark plugs and in NGK spark plugs, replaced my engine and cabin air filter, and changed my pcv valve. I'm doing a lot of this work for the first time, and I'm super excited to be doing my own mechanical work. I discovered that my engine outtake (maybe intake?) was not connected, so I fixed that, then I found a hose near the engine not connected to anything. I'll post pictures. Can anyone help me figure out what these lines go to? I don't know if it's the reason my car has been idling rough, but I can also post video of that, it it helps any. The mechanic said it might be a coolant line. I cannot figure out for the life of me what they connect to, as they don't reach anything. Thank you.