Originally Posted by Hyjinx

Interesting. I run my FA 325 R5 with the 3/32. Have no memory of trying 1/8 . Can't imagine why the larger line with greater volume and less flow resistance would result in a lesser overall power output.
Usually more easier and faster creates in kind results?
Swamping the system with to much methanol for the glo plugs maybe?

Originally Posted by Glowgeek

1/32 larger fuel line wouldn't cause your issue. If you can't get the same power as before check your plumbing for air leaks or fuel restrictions.