My PV's aren't boost referenced but I figured at my power level it wouldn't be an issue. I'm only running the front PV my sec. metering block wasn't equipped with one. I finally got my fuel pressure set...I had my return and feed crossed up. Fixing that made it run better but it still loads up and chokes out. I've got an MSD coil but its pretty old and I planned on replacing it soon too. I'm running autolite 3923's that were recommended to me on here. I should get a chance later this week to make some of the mentioned changes/checks when the rain moves out.