my posts are not coming across clearly, it should idle fine etc if set up correctly, Bels G6ET idles at 550 rpm with 1000cc injectors, high fuel pressure at idle can be tuned around, but correct pressure is ideal, you will not have 100 psi once the revs come up unless your pressure reg is stuffed and lastly, your afrs in your tune were good enough to not cause any power issues, retuning may fix idle issues but not power issues unless they suddenly work out they have done something incorrectly and rectify it