Your brushing can still use some work. but i see some differences between your other pieces. that means you tryed to improve. that's good. Good use of stocks to, but some pieces look crappy, not that that is your mistake. Chaotic render to, I like those pieces but i couldn't get them on my Desktop. Nice and clean, maybe you should try that at once? Anyway overall stuning job !!
Great choice of colors! I like the text too. I'm just not a fan of the piping though. And there's one or two places with lines that I don't understand (ie, there's one on the midway between the pipe and the bottom left corner where it looks like the light was cut off or something) but overall a good choice and I'm glad you didn't do the overused style of ab explosion that so many get stuck in and can't see past. Nice and tech-y. Thumbs Up
actually i've gotten a bit tired of abstract work, but this is pretty sweat, great thing you kept the 2d at a minimal, sometimes 2d work just gets too much on these abstract things.
overall nice, good job!