Nismo adjustable FPR--does it fit? Other alternatives?

[MarkEmark]

Hey,

I want to buy an adjustable fuel pressure regulator, but I need to get one that is going to DECREASE the pressure below the 43 psi @ 0 vacuum to lean the car out a bit, not increase it like everyone else does.

Therefore, I can't use another FPR in conjunction with the OEM one at the end of the rail since it would never let me go under 43 psi (at no vacuum), only higher.

It'd be a lot easier if I could just put another FPR in-line, but I can't do that because I want to lower pressure.

First question:When they rate adjustable FPRs, do they rate them @ idle, which is around 35 psi, (~20 in. Hg vacuum) or at no vacuum (43 psi)?

Second question:The Nismo adjustable FPR is supposed to bolt right in the fuel rail, but I've heard of fitment issues, and it seems like a PIA to install it an then not even be able to adjust it. Does anyone have one installed on a KA24DE fuel rail/know someone who does? Does anyone know how they fit?

Third question: Can the Nismo adjustable FPR (used to REPLACE the OEM one, of course) adjust fuel pressure BELOW the 43 psi @ 0 vacuum, and if so, how much? What is its range of adjustability?

Fourth question: I may just get a more adjustable, nicer FPR and make a custom bracket to mount it in the fuel rail so that I can mount it somewhere that I can adjust it/get to it conveniently. Does anyone know who makes a good, economical, bulletproof FPR that has barb fittings for regular fuel injection hose? Most importantly, such a FPR needs to be able to adjust to BELOW 43 psi @ 0 vacuum, perhaps as low as 33 psi. (I can't get one with aeroquip or AN fittings, although if such a FPR had female threads, I could screw in a pipe fitting that has a barb at the end for hose, assuming they were fairly standard size).

Any input guys?

ThanksMarc

[MarkEmark]

Hmm...no replies and only 15 looks?

Don't make me take this thread over to FA