So for the second time since I put the new combo in, I started getting low on fuel and noticed the car doing the buck/shudder dance that I was used to with a collapsing pickup hose. Today the gauge showed about 1/8th tank, I got on the freeway, it started shuddering under heavy load, and then the fuel light came on immediately. If I go a little easier on the throttle it was OK. I assume it was sucking air.

Anything I can do to solve this? Did I do something wrong somewhere? It works flawlessly otherwise, this is the only issue I've seen.