1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Fuel Pressure on honda's?

Discussion in 'Engine Building' started by RoboRex2005, Mar 15, 2009.

  1. RoboRex2005

    RoboRex2005 New Member

    Messages:
    21
    Likes Received:
    0
    Joined:
    Jan 16, 2009
    Location:
    Cleveland, Ohio
    Im about to put a wet-kit on my LS-VTEC, 13:1, ITB, CRX.
    So i was curious about an adjustable fuel pressure regulator.

    What is the stock fuel pressure on a CRX? Dose it increase with rpm?

    What is a rising rate fuel pressure regulator?

    What pressure should I run with nitrous?

    Any recommendations?
     
  2. eg6sir

    eg6sir Supa Mod Moderator VIP

    Messages:
    21,703
    Likes Received:
    321
    Joined:
    Aug 17, 2005
    Location:
    661 BK CA
    so you have a ITB LS/VTEC running 13:1 cr and you're asking about an adjustable fpr... something is not right here
     
  3. austin20110

    austin20110 New Member

    Messages:
    1,272
    Likes Received:
    30
    Joined:
    Sep 24, 2008
    Location:
    Northern Va
  4. Briansol

    Briansol Admins Admin VIP

    Messages:
    21,456
    Likes Received:
    2,117
    Joined:
    Nov 18, 2007
    Location:
    CT
    itb's require a standalone to run.... how you are running this off a stock ecu, i have no idea.

    fpr's are 1:1 on hondas.

    you'll need larger injectors (310+) as your all motor is probably already maxing out the injectors.

    get it tuned. do pulls on the dyno with the juice.

    get two maps made, one for juice, one for without.

    it's a total pain in the ass.
     
  5. RoboRex2005

    RoboRex2005 New Member

    Messages:
    21
    Likes Received:
    0
    Joined:
    Jan 16, 2009
    Location:
    Cleveland, Ohio
    F*CK THAT!!! I built everything on my car including the intake manifold.
    [​IMG]
    [​IMG]
    Working on the NOS kit now.

    Engine


    Block: B18a1, JE pistons for b16(13:1), Eagle Rods.
    Head: B16, fully port and polished (by me). SK2 stg3 cams, SK2 valve springs and titanium retainers.
    Intake: B16 flange, aluminum tubes, port matched and polished
    Injectors: DSM blue top, 450cc.
    ECU: chipped P28 on chrome. (yes it has ITB software) Need to retune to get allittle more out of it.

    Slowmotion Dyna-Pak dyno (gay): 187hp, 142, torque.
    Engine ran great last season.. Ran 14.2 at 104mph snaking down the track. working on the wet kit now.

    I just somebody on here would know something bout honda's and their fuel pressure.

    Stock pressure?
    Whats a recommended pressure with a wet kit? Should I just experiment until it leans ot?
     
  6. Briansol

    Briansol Admins Admin VIP

    Messages:
    21,456
    Likes Received:
    2,117
    Joined:
    Nov 18, 2007
    Location:
    CT
    pressure is not volume.

    if you feed nitrous into the motor you need MORE fuel, not the same fuel at a higher pressure.
     
  7. Z6CRX

    Z6CRX übber ɐɾuıu etarip

    Messages:
    1,560
    Likes Received:
    33
    Joined:
    Aug 22, 2005
    Location:
    Pittsburgh, PA
    reasons like this is why i like turbos. Less money more power. But nothing beats the screaming sound of a high output N/A.

    Invest in better tires and work on your launch, times will improve on the 1/4 mile. Adding nitrous will just make you spin tires at launch and shortly after launch. 14.2 just sounds slow to me for all that into it.

    But definitely check the injectors peak on your fuel maps. if its getting close to the top definitely get bigger ones for the extra room to tune you will need.
     
  8. RoboRex2005

    RoboRex2005 New Member

    Messages:
    21
    Likes Received:
    0
    Joined:
    Jan 16, 2009
    Location:
    Cleveland, Ohio
  9. BrokenRex

    BrokenRex New Member

    Messages:
    388
    Likes Received:
    10
    Joined:
    Mar 21, 2008
    hell yeah 14.2 sounds slow for a 180+ whp CRX (dynapaks have a tendency to read lower than actual.) and to answer your question, your CRX used to have a FPR that was regulated by vacuum, not engine speed. what you have on it now however, i have no idea.
     
Verification:
Draft saved Draft deleted

Share This Page