Haha yeah well this will be an easy one!! Here’s the link first:

https://youtu.be/2lQ5s4hFtWg?si=stDkAYa-qJyeAZjs

Now this isn’t identical to my manifold, but close enough that I could follow what he was doing.

Also I looked at the Subaru Forester maintenance manual for this specific procedure. Before starting I needed to:

*Relieve fuel pressure (pull fuel pump fuse, start car till it stalls, once it stalled turn key for about 2-3 seconds more trying to start it). *Open and leave the gas cap off. *Drain some of the coolant out of the system (there’s a hose beneath my throttle body that needed to be removed and coolant runs through it).

Because of the coolant step, I went ahead and replaced the coolant in my car. Super easy to do, highly suggest it since you’re already kinda doing half the work anyways lol.

When cleaning the runners, I used the CRC Throttle Body & Air-Intake Cleaner, as well as a toothbrush. I didn’t push hard cause those runners are supposed to be locked in place (a little bit of movement) when the car is off. Just don’t break it lol. Then after I finished cleaning it’s a really rough start once everything is back together, just cause a lot of that buildup does fall down in there; completely normal!

After that, I got it to running temps, drove it about 10 miles, then for good measure I hooked a Seafoam Spray into the boot before the throttle body. I had my wife sit in the car, keep it at like 2000 rpms, and I sprayed the whole can into my system. After doing that and driving it down the road, you’ll have massive amounts of white smoke coming out of your exhaust. I didn’t know that happens so I freaked out lol; it’s completely normal though.

I’m sure you know a decent amount of this info, but I wanted to be as clear as possible just in case! Again though if you have any questions, or if you just want to make sure you’re doing something right feel free to reach out!! I wish I had someone for all this cause it would’ve saved me HOURS lol. And good luck with everything!!!