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Thread: SN 2000?

  1. #1
    Junior SCH Member
    Join Date
    Dec 2007
    Posts
    6

    SN 2000?

    I have an 89 gt that i just installed the SN2000 on with the 8psi upgrade and the inlet pipe to a boostmaster and would like to know if the small inlet protruding from the boostmaster pipe hooks to the breather neck?.I also would like to know if i also just plug off where it connected to the throttle body?,will it hurt my engine to run the car with the stock fuel pump for a short time?
    any info appreciated... Brian.

  2. #2
    SCH Moderator "SN Guru" speedytang's Avatar
    Join Date
    Dec 2002
    Location
    Marengo, Ohio
    Posts
    2,028
    The small inlet is for a return bov that goes between it and the intake pipe so when you close the throttle it returns the pressure back to the intake pipe to keep the throttle from being pushed open and also keeps the pressure from pushing against the impeller causing damage. Just plug the throttle body and valve cover nipple. Using a FMU really pushes the stock pump at even 5psi. Your asking a 88lph pump to hold a 100psi fuel pressure at 5psi and WOT. If you do push 8psi you will lean out the motor. You need at least a 190lph to keep from going lean.

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