The clutch doesn't seem to be slipping and as far as I know the flywheel is OEM. I'm not sure about the o2 sensor though.

Easy on my 17's Redline, they came with the car. I drove a bone stock CRX for 15 years so this one was kinda fun with all the extras! I'll post pics when I get a chance now that it's all put back together.

Any other ideas on the RPMs? When it was running real high, I thought that maybe the tach was lying to me so I kicked it in the ass a little and heard the v-tech engage at 5500ish like normal. The next day when it seemed to be back to normal, the v-tech still kicked in at 5500ish.

Could the o2 sensor cause erratic RPMs?