Pretty hard to 'break' a regulator all it is is:

a diaphram,
a spring
and a fixed return orrifice.....Not a lot to go wrong really.......

Yes, it should be in the return line after the injectors....... unless someone has set up a fixed orrifice return from the rails or it's a 3 port regulator with no return from the rails (bad mkay!).


Fluctuating pressure maybe because the reg has been unwound all the way and is not trying to hold a high enough pressure ?

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[CENTER][COLOR=#ff0000]Built Ej207: Semi-closed RA Cases - Wiseco Forgies - Manley rods - BC 272 cams - GDA Heads - billet f/whl - Vi-pec - WbO2 - 800cc Yellow tops - TD05-20G - 409Hp ath @ 1.75bar on E85[/COLOR][/CENTER]