I do...with no problems.
I don't think the SB is causing you the problem, especially if it was working fine in the car prior to the Renntech kit.

When I first installed my kit and started it for the first time, my check engine light came on too, but it was because I forgot to plug the electric fan back in.
I plugged it in, reset the ECU and all was fine.
I never had a rough idle though.

I'm sorry to hear that your having problems...the kit is so simple to install that it would be hard to think of anything else that would be causing your problem.
Besides ECU issues, the only other things I can think of that would cause rough idle problems would be things like... unplugged sensors or unplugged spark plug wires, timing belt (if its even a belt?) slipped some how...but you didn't even use a impact gun to remove the pulley bolt...
Or maybe the accessory belt is put back on wrong? That probably would cause a rough idle though...
It also sounds like you ruled out the broken off screw driver issue.
Other then those ideas, I'm sorry, I'm probably not much help.

If you don't figure it out soon, I hope Renntech will help you figure it out, because that just sucks not having things go right!

Please keep us updated, because now Im wondering what it could be...