Jump to content

Welcome to Ultimate Subaru Message Board, my lurker friend!

Welcome to Ultimate Subaru Message Board, an unparalleled Subaru community full of the greatest Subaru gurus and modders on the planet! We offer technical information and discussion about all things Subaru, the best and most popular all wheel drive vehicles ever created.

We offer all this information for free to everyone, even lurkers like you! All we ask in return is that you sign up and give back some of what you get out - without our awesome registered users none of this would be possible! Plus, you get way more great stuff as a member! Lurk to lose, participate to WIN*!
  • Say hello and join the conversation
  • Subscribe to topics and forums to get automatic updates
  • Get your own profile and make new friends
  • Classifieds with all sorts of Subaru goodies
  • Photo hosting in our gallery
  • Meet other cool people with cool cars
Seriously, what are you waiting for? Make your life more fulfilling and join today! You and your Subaru won't regret it, we guarantee** it.

* The joy of participation and being generally awesome constitutes winning
** Not an actual guarantee, but seriously, you probably won't regret it!

Serving the Subaru Community since May 18th, 1998!

Guest Message by DevFuse

- - - - -

Fuel PSI for TD04

  • Please log in to reply
1 reply to this topic

#1 Tosh


    Subaru Fanatic!

  • Members
  • 360 posts
  • Centralia, WA

Posted 31 August 2006 - 08:11 PM

My current setup is
stock turbo EA82
stock ea82 turbo injectors
TD04 turbo (stock boost)
spider intake manifold

I'm trying to figure out what pressure I should be running at with the stock injectors. I'm just trying to keep it from leaning out. I've been hearing 36psi is about what I need can anyone confirm that ?

MSD sells a 36-45psi adjustable fuel pressure regulator for around $50 think that will work ? anyone have anything cheaper or that works better?

#2 calebz


    Andys Coupe killed my cat

  • Administrator
  • 7,547 posts
  • Tacoma

Posted 31 August 2006 - 09:52 PM

Stock is 36psi. (and some change)

Remember that that is a relative manifold pressure.

So when you are at 10 pounds of boost, its more like..

46psi - above ambient atmosepheric pressure (of course)

in answer to your question. Running stock boost, the stock FP is a good place to start. Does tend to lean out in the top end though.

Fuel pressure is only part of the problem though. you still have to deal with delivery, GPH and injector pulse width.

Delivery - Injectors
GPH - Fule Pump
Pulse Width - ECU/EM

0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users