What I wanted to know is, has anyone else tried either of these mods and what their results were. Do they work? Could they harm your truck? Etc...
** If yer referring to.. removing the filter spring (?) and drilling out something on the fuel rails ? I've never heard of those two Mods.. as described.
One of the other mods he suggests is to remove the in tank filters on the sending unit. If I'm not mistaken, I think this is called the Hutch mod. The other was replacing the fuel regulator spring with a firmer one. Both mods are documented in wiki.
**There's a Screen (the Duckbill) but no "filters", parse, in the fuel tank. The "Hutch Mod" involves re-configuring the fuel pick-up/sending unit assembly, by eliminating a OEM fitting that is prone to let air be sucked into the fuel system (Not good), and re=routing the return line location. There's wiki's and good write-ups on this, on some of the Site Sponsors websites.. that sell kit's to do that Mod... and why... in more detail.
** I know of No [Firmer FPR spring], but you can Shim the one you have.. to 70 psi fuel pressure. there's a DIY on that, here on SDD too.
I searched wiki for the other 2 but didn't find anything. Anybody have any experience with these?