you're right but not with the 705 wich has a fuel-pickup and not a fuel-filter inside (bad product) the new 710 has a new filter in side the tank so you don't need an external filter

I'm also running the FPS and the new diffadjuster, i use the FPS for long runs and as a backup when i don't feel right with the diffadjuster. I think the FPS is better to adjust in very little steps, but its also very heavy for the car