It's the type of pickup and where they're placed. These pickups shut off if they're not immersed. Ran the tank down to about 1/2" of fuel over uneven terrain and it did not hiccup or sputter once
Sounds awesome would love to see this type of pickup that shuts off.
Something like this:
http://autoperformanceengineering.com/html/pickups.html
Thank you!