Looks fantastic maf! I too put together a quad build on the 454 last night and whoa nelly, this thing delivers in just about any configuration you can come up with. So far, I've done single, single parallel, dual horizontal, dual vertical, and now quad vertical. Quad vertical is what this thing was meant for though. Huge airflow and billowy vapor, but still all the flavor I was getting out of my single parallel. I've bumped out my #2 flavor from the 454 (favorite flavor used to go in the Tobh) but now the 454 is my ADV, as it were. Just a badass little
device here.