I run the Aeromotive like the Earls..but it has a fuel shut-off , when you need to clean itTommy,
I run these between the tank and pump: -8
Amazon.com: Earl's 230208 Blue Anodized Aluminum 85 Micron In-line Fuel Filter: Automotive
There is some truth to this. But the first filter can really amount to nothing more than a screen that filters small enough to protect the pump. But ap67 is right that if you put a filter with a small enough micon rating to protect the tiny ass hole in a EFI injector, then it either needs to be huge, or you will cut the flow. Most fuel pumps are not the best at pulling fuel thru a small micron/small filter area filter.fuel injection MUST run 2 filters. A pre pump filter (typically 100 micron) then a post pump filter (typically 10 micron). but you guys with toilet bowls for fuel supply just need something good enough to filter what could get stuck in the needle and seats. However if you run an electric pump i'd think about 2 filters simply because you want something filtering before the pump, but if you go with too fine of a filter you may have a hard time drawing fuel, so a pre and post may be a good idea. mechanical pumps are a different story.
This is the filter I use, 5 micron at 300 GPH flow and complements the looks of the fuel system as well.