Help with installing Fuel Pressure Regulator
#1
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Hello,
Im getting ready to install my new FPR, it came with no instructions heres a picture of one just like it to help me get my point across.
![](https://www.miataturbo.net/attachments/engine-performance-56/105383-help-installing-fuel-pressure-regulator-%24t2ec16rhjicfhn1b7ls-bs-yghlrzw%7E%7E60_3.jpg?dateline=1394229260)
heres a picture of a 1.8l oem fpr with my personal editing to point out what im getting to.
Alright so the inlet on the bottom of the regulator is were the fuel sending hose goes.
the one on the top right is were the hose goes from regulator to fuel rail via adapter flange.
there is another hose coming from the side of the oem fuel pressure regulator. were does that get plumbed too?
there is a vaccum line looking port on the top of the reg, and a port which im pretty sure the gauge goes in.
so what do i do?
let me express this in a graphic
![Help with installing Fuel Pressure Regulator-fprques.png](https://www.miataturbo.net/attachments/engine-performance-56/105382d1467840382t-help-installing-fuel-pressure-regulator-fprques.png)
how am i supposed to plumb this thing? please help
Im getting ready to install my new FPR, it came with no instructions heres a picture of one just like it to help me get my point across.
![](https://www.miataturbo.net/attachments/engine-performance-56/105383-help-installing-fuel-pressure-regulator-%24t2ec16rhjicfhn1b7ls-bs-yghlrzw%7E%7E60_3.jpg?dateline=1394229260)
heres a picture of a 1.8l oem fpr with my personal editing to point out what im getting to.
Alright so the inlet on the bottom of the regulator is were the fuel sending hose goes.
the one on the top right is were the hose goes from regulator to fuel rail via adapter flange.
there is another hose coming from the side of the oem fuel pressure regulator. were does that get plumbed too?
there is a vaccum line looking port on the top of the reg, and a port which im pretty sure the gauge goes in.
so what do i do?
let me express this in a graphic
![Help with installing Fuel Pressure Regulator-fprques.png](https://www.miataturbo.net/attachments/engine-performance-56/105382d1467840382t-help-installing-fuel-pressure-regulator-fprques.png)
how am i supposed to plumb this thing? please help
#9
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OP: You have a megasquirt, why the hell are you fooling around with a FPR? Just go buy proper injectors already. There is a set of Denso RX8 425cc injectors in the classifieds right now for $125, that'll get you started.
#11
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its not made by ebay douche bag. my stock fpr is fucked up.and the hoses need be replaced, alot of things in my engine bay are over 20 years old and why not get one from Majesty they have great reviews and are better and cheaper than getting an oem one from mazda for 170$
#13
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Does the stock one rise in pressure like a rising rate fpr?
#15
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Built motor headers ms pnp, and i have a vaccum gauge, do i need to keep that tapped in on my vaccum line constantly? That does not sound safe having fuel regulator attached to a vaccum line that goes to a gauge in my cab