Hello all, Thanks for having me. I'm the new guy, having just purchased a 91 TT 2+2 AT. I have been going through the process of tidying it up (It's a bit of a project car for me, something to sink my teeth into) as she was in need of some love and attention (really f'ing filthy). The first thing I did when I got her home is give her a medium sized clean so that I could do a proper stocktake of the situation. Whilst I was cleaning up the engine bay I noticed a couple of Vac lines unhooked. I re-attached one that was obvious (passenger side rocker cover nipple), but am having an issue identifying the one you can see in the picture here. The line heads into the drivers quarter panel, I thought it may be part of the AIS because of the tank location (though all of the AIS lines seem accounted for), but I was hoping an expert may be able to chime in. The car has a misfire, as diagnosed in the pre purchase, the misfire is present at idle to mid rpm. On start up, engine revs walk immediately after turn over, only briefly, before settling down soon after to 800-900 steady (in case any of that matters to the vac line diagnosis). I am trying to attack this thing slowly and having fun, only commiting a few hours a day. So far have done a full external wash to check body condition, a couple of hours of engine bay degreasing with a hand brush to start the bay cleaning process, a "seats out" interior clean and a front and rear seats leather shampoo, with a day of Obenaufs Leather Conditioner soaking in. It's getting there but much, much more to go! Ordered parts so far include: Splitfire coilpacks New driver and passenger windscreen cowlings New targa top centre bar New sun visors 2 fresh 300zx key blanks Original 3 spoke cruise control steering wheel to replace the shitty aftermarket one. Ordered new tyres Fresh Iridium plugs Much more to go. The car is bone stock and 120,000kms, it will be a cruiser/restomod weekender for me. By the way, does anyone know where I can buy a cat-back exhaust from? Once I source one, I would like to take it in for a service and Nistune. Cheers all, and thanks for having me!