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Fuel Pressure: PSI

Discussion in 'General Tech and Maintenance' started by mynumber1hater, Oct 13, 2009.

  1. mynumber1hater

    mynumber1hater New Member

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    My set up: 92 tegg
    B18c1 bottom end
    GSR crank and rods
    CTR .25 over pistons (PCT)
    ARP head studs
    ITR water pump
    B16A oil pump
    NEW tensioner
    DC sports 4-1 header
    Head:
    B16A head, ported and polished, 5 angle valve job
    ITR cams
    ITR valve springs and retainers
    ITR injectors
    B16 intake
    What fuel pressure (PSI) should i be running? The car is running a little rich.
     
  2. mynumber1hater

    mynumber1hater New Member

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    Runnin' on a chipped Mugen P28, after market Adj FPR.
     
  3. Briansol

    Briansol Admins Admin VIP

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    the "mugen" chip is your problem. leave your fuel pressure alone...

    get the car tuned with a map FOR your car, not a 14:1, 11k rpm mugen race car.
     
  4. FLounder

    FLounder power hungry VIP

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    you are running rich because of your chipped ECU not fuel pressure. with the type of modifications you have listed there is no way the car will run 100% with any type of basemap "chip". you need to have the car tuned. either do some research on your own or find someone in your area that can tune and they will tell you what you need to do. there are many options, but a lot of tuners may only work with one or two tuning programs.

    to my knowledge, ITR injectors are the same 240cc ones used on other b series. you should probably just run the stock fuel pressure.
     
  5. mynumber1hater

    mynumber1hater New Member

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    I am the second owner and im trying to work out the bugs.. I was told it was tuned when i bought it ... What is the stock fuel pressure?
     
  6. Matts96HB

    Matts96HB . Moderator VIP

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    Tuned means a map specifically for that car and that setup.

    IMO, a car is not "tuned" until there's a wideband in the car and the readings are where they should be.

    You need to look into alternate methods of tuning. Guesswork will only yield damage in the end.
     
  7. Briansol

    Briansol Admins Admin VIP

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    stock fuel pressure is around 42-45psi.
     
  8. mynumber1hater

    mynumber1hater New Member

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    You guys where right.. FP just fine. I called a few places to get it tuned and they want 450. Thats too much. What can i do? ARe there places a can send the P28 and have it re-chipped or can i just buy a stcok chip and run it for a while??? I dont need the car to put out every last HP it has. thanks
     
  9. Briansol

    Briansol Admins Admin VIP

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    the only way to be SAFE is to have it custom tuned.

    where are you located? perhaps theres a guy local who can help who's not a shop and won't charge you an arm or a leg
     
  10. mynumber1hater

    mynumber1hater New Member

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    houston tx
     
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