So I've looked at these online. Is there any reason that a dead head style would not be a good idea with the mechanical fuel pump, (5-7 psi), on mu 153 ? I really haven't seen any bypass designs that go as low as I need, (3 psi).
FishFry, where are you buying the Malpassis? Most of them that I see for sale are in the UK.
They are working just fine with a mechanical pump (when they where developed, all pumps where mechanical anyway) - though I switched to electric last year, I run it on the original pump (261) for 20 years (also on my other cars).
I live in Germany, and since it is a European (Italian) product they are available pretty much everywhere.
Frank
