Where Is Fuel Pressure Regulator On M35?

[YangLIU]

Hi everyone,

just want to install Greddy Profec boost controller on my M35. here is some installation information:

actually i am not sure which is fuel pressure regulator that need to connect to boost controller. i took a picture and marked 2 pipes in red and green. could anyone told me which is correct pipe connect to fuel pressure regulator? thanks all.

[joshm35]

Left is to fuel reg

[Ben C34]

Also doesn't matter. Just needs to be plumbed to the manifold somewhere to measure vacuum and boost.

Either you have marked is fine

Edited December 18, 2014 by Ben C34

[YangLIU]

Left is to fuel reg

thanks mate, you mean the left vacuum in red colour?

[YangLIU]

Also doesn't matter. Just needs to be plumbed to the manifold somewhere to measure vacuum and boost.

Either you have marked is fine

i think i could get you. actually this is for monitor the boost in manifold? and i could also connect this vacuum with boost gauge vacuum together?

[joshm35]

Yes

[YangLIU]

Yes

cool! thanks mate.

[joshm35]

Why not use the factory hose like I did. I can take a pic of my set up when I get home if you wish (hdi duel stage). If not im sure you got it sorted

[YangLIU]

Why not use the factory hose like I did. I can take a pic of my set up when I get home if you wish (hdi duel stage). If not im sure you got it sorted

yes sure. post your pic pls.

[joshm35]

See where that blue plug is on the left. Could you post a pic of that area as im out at the moment. That way I can point it out

[YangLIU]

See where that blue plug is on the left. Could you post a pic of that area as im out at the moment. That way I can point it out

no worries. i am also not at home now.

[joshm35]

Once I get onto my laptop ill get some pics and what I did for you.

[joshm35]

Please have a look at the attached photos. I hope this helps you with your install

[YangLIU]

Please have a look at the attached photos. I hope this helps you with your install

thanks mate. i think i could get you. in your pic, you just changed solenoid only? For Greddy boost controller, the control unit need another vacuum pipe connect between manifold and fuel pressure regulator to measure the boost. and another question, shall i need to remove the stock boost sensor?

Edited December 18, 2014 by YangLIU

[joshm35]

You dont have to remove it, I did as I replaced mine with the hdi-ebc-d due to the oem unit always malfunctioning. I haven't had an issue since replacing it with the hdi unit. The hdi unit seems like a simpler install. That hose i mentioned earlier would be the one you are looking for then if thats the case

Edited December 18, 2014 by joshm35

[Ben C34]

The signal line to the ebc has to come from the manifold.

The pressure source to the solenoid has to come from the turbo.

That's important, and not very clear from above pics. What ever line you use on the manifold for the ebc makes no difference. Then use the line to the stock solenoid for the new solenoid.

[scotty nm35]

Actually, I don't like using the fuel reg line for the manifold pressure reading anyway, as that long hose you are fitting can slow the reg's reaction down. Also if it leaks it will lean out your engine.

I prefer to use the front bung normally used for the stock boost gauge. You might need an adapter though, it's tiny. The BOV line is another you could use, who cares if that leaks.

Make sure you put a cable tie around the hoses to the reg, they have been popping off a lot lately.

[YangLIU]

Actually, I don't like using the fuel reg line for the manifold pressure reading anyway, as that long hose you are fitting can slow the reg's reaction down. Also if it leaks it will lean out your engine.

I prefer to use the front bung normally used for the stock boost gauge. You might need an adapter though, it's tiny. The BOV line is another you could use, who cares if that leaks.

Make sure you put a cable tie around the hoses to the reg, they have been popping off a lot lately.

yup. thats what i am thinking. actually it is hard to use fuel reg line due to the narrow area. i already have a new boost gauge using stock boost gauge vacuum. now i consider to use BOV vacuum for EBC pressure reading.

[YangLIU]

You dont have to remove it, I did as I replaced mine with the hdi-ebc-d due to the oem unit always malfunctioning. I haven't had an issue since replacing it with the hdi unit. The hdi unit seems like a simpler install. That hose i mentioned earlier would be the one you are looking for then if thats the case

i know what you are talking about. actually Greddy EBC has 2 part for installation. 1 for solenoid, 1 for pressure signal reading. my original question is for pressure signal reading part. and your pic is for solenoid part. here is a part of Greddy EBC installation manual. I think M35 should use METHOD2 as below and it is same as your pic, right?

[joshm35]

I used method 2. I ran boost sensor line from the front of the intake. Did you want me to show you the line?