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  • 2 bar map

    Originally posted by Syn
    Originally posted by StudlyCamaro
    its a top end stand alone engine management unit

    the 2 bar map is essential for high boost levels as a 1 bar map will not be able to read high pressures

    TTT for a good price
    totally incorrect information. don't post if you don't know

    a one bar map can't read above atomo pressure so thats why you have to use a 2-bar map. and that itself only reads up to certain psi above atom. pressure then you move onto a higher # map.
    how is anything you said different than what i said besides more detailed???? (i didnt want to whore norm's for sale thread so i started this thread)
    3.4L camaro some goodies

  • #2
    Looks like he didnt read what you typed and jumped to a conclusion. Your both right.

    I know i had to read your post twice just to make sure i wasnt reading it wrong.


    Its called "speed reading" but see what happens when you engage mouth before brain?
    1984 Indy Fiero 3.4L
    13.7 sec @ 98 mph
    *ALL THROTTLE AND NO BOTTLE*

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    • #3
      I guess it depends on your definition of "high boost".

      A 2 BAR MAP sensor will only read up to 14.7 PSIG. Some would call that high, while others such as myself do not.

      BTW a 2 BAR+ MAP sensor is not nessisary, which is what I think syn was getting at. I have ran a few turbo and supercharged vehicles utilizing a 1 BAR MAP. There is just now ignition or fuel trim/enrichment in proportion to boost pressure.

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      • #4
        Actually, your post does sound confusing. It almost makes it sound as the 2-bar is what you want for high boost and the 1 bar is fine as long as you're running low boost. I too considered it wrong by looking at it.

        Besides. I dont consider 15psi to be high boost. If you max out a 3-bar sensor (~29psi) then i'm sure that'll qualify as high.
        97 Cavalier RS
        3400, Isuzu MK7

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        • #5
          Since when can you used a 1bar MAP for boost?!
          1984 Indy Fiero 3.4L
          13.7 sec @ 98 mph
          *ALL THROTTLE AND NO BOTTLE*

          Comment


          • #6
            I don't think it's really something that should be done unless you are hacking along the job. I myself even went to II-Bar to make life easier, & I am not the motivated type.
            Lifting my front wheels, one jack at a time.

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            • #7
              well i guess it depends on what your doing for fuel/spark that would depend on the map, if you use a rrfpr and ect and really no spark control you can keep the 1 bar map. but what i was saying is if the computer is going to be able to read boost you'll need a 2bar.

              i actually read the post and didn't jump to a conclusion

              raven hit it
              sigpic

              1993 Cavalier Z24, 3.1/3400 hybrid, crane 272 cam, LS6 springs,port and polish,2.5 exhaust to 80 series flowmaster,solid mounts

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              • #8
                If you don't mess with the PCM/ECM, I would think you'd have issues running pump fuel around the 7PSI + range. ??? Even if you do use all those other bandaid parts.
                Lifting my front wheels, one jack at a time.

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                • #9
                  Originally posted by Syn
                  well i guess it depends on what your doing for fuel/spark that would depend on the map, if you use a rrfpr and ect and really no spark control you can keep the 1 bar map. but what i was saying is if the computer is going to be able to read boost you'll need a 2bar.

                  i actually read the post and didn't jump to a conclusion

                  raven hit it
                  ahh, ok, just wanted to make sure that im on the right page (even if i suck with words)... i thought for a second i didnt know what a 2 bar map did
                  3.4L camaro some goodies

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                  • #10
                    Originally posted by 1988GTU
                    If you don't mess with the PCM/ECM, I would think you'd have issues running pump fuel around the 7PSI + range. ??? Even if you do use all those other bandaid parts.
                    upgrade the fuel pump+rrfpr you don't reall need to mess with the ecm.but that setup is only good to maybe 10psi

                    StudlyCamaro ok glad you understand
                    sigpic

                    1993 Cavalier Z24, 3.1/3400 hybrid, crane 272 cam, LS6 springs,port and polish,2.5 exhaust to 80 series flowmaster,solid mounts

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                    • #11
                      If you live at 6000'+ a 1 bar works pretty good up to a few PSI boost

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                      • #12
                        Originally posted by Syn
                        Originally posted by 1988GTU
                        If you don't mess with the PCM/ECM, I would think you'd have issues running pump fuel around the 7PSI + range. ??? Even if you do use all those other bandaid parts.
                        upgrade the fuel pump+rrfpr you don't reall need to mess with the ecm.but that setup is only good to maybe 10psi

                        StudlyCamaro ok glad you understand
                        True , but I didn't feel comfortable with it... Makes me sleep better at night knowing it's not throw together.
                        Lifting my front wheels, one jack at a time.

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                        • #13
                          15 psi can be high boost. It depends on the engine. If you got a 427 V8, 7 PSI is damn high . If you got a 2.0L. 15, not so high.

                          1991 Cavalier VL Coupe 3400 5 speed

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                          • #14
                            Originally posted by matt_p
                            15 psi can be high boost. It depends on the engine. If you got a 427 V8, 7 PSI is damn high . If you got a 2.0L. 15, not so high.


                            Care to explain the logic in that? How does the displacement of the engine have any effect on what is considered high and low boost?

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                            • #15
                              LOL
                              11.92 @ 122 MPH 3400 91 Cavalier Z24 Intercooled S/C. -totalled-
                              10.56 @ 130 MPH 3900 LZ9 87 IROC Z28 Intercooled GT4088 Turbo

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