We didn't have the conversation but I agree with you Mark, I'm pulling the engine again I guess and going to go with new mains as well. I already have a new oem pump, and new clevites (mains and rods) on order now. The dip in power is actually the internal wastegate or the MBC, it spike to 19psi and falls off to around 14 then goes back up to 18 up top. I was contemplating leaving the mains but afterlooking at them(rod bearings) and thinking about it I don't want to risk it. I was very surprised with this set up. At 9 psi it made 302 and this is NOT on race gas, its on E85 pump gas. I was happy with it until the 0 oil pressure thing, and it just happend all of the sudden. The run before that the oil pressure started at 50psi and went up a bit. I pulled the plugs out to gap them down tighter because I was getting some blow out and put them back in started the car and bam, Zero oil pressure. I turned it back off and pulled the feed for the turbo off and cranked it, still nothing. Just odd for it to just stop like that. Now I'm thinking if I want to push the log manifold and e85 to the limit or change the manifold for somthing even more sick (6) With 415 at 18 psi I think I could be over 500(manifold willing) at 26psi