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Boost levels @ redline ??

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  • Boost levels @ redline ??

    Well I was wondering what boost everyone was getting around 5500-6500 RPM ??

    I get around 10-12 PSI

    QuA
    2008 BMW 135i | M Package | JB3 | DCI | BMW Performance Exhaust

  • #2
    If you're chipped, you should get about 15psi until 5200 rpm or so. Then it falls off gradually to something like 10 at 6500 rpm. You may spike as high as 20psi for about 1 second when you step on it. If you are doing better than that, then you either have other mods to help you out, or you have mad luck. Peter seems to be getting a bit more than this in his car right now... not sure if this is his exhaust, cai, "H" valve or (probably) all three.

    If you're not chipped, you probably get something like 10-11 psi throughout the band. I have looked at a LOT of data about this topic.
    KR
    Porsche 991 Carrera S

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    • #3
      Because these blowers are so small, a spike of some sort is bound to happen because they spool so fast.

      I drop down to about 10-12 pounds too, depending on how heat-soaked the engine is. These turbos can't flow the air at the high rpm's.
      "I live my life a Quarter Pounder at a time. For those 10 seconds or less, I'm not hungry."

      http://www.xs4all.nl/~bbrother/sigs/oizo.gif

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      • #4
        Awesome Info!

        QuA
        2008 BMW 135i | M Package | JB3 | DCI | BMW Performance Exhaust

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        • #5
          i hold 16 at redline, but i always shift at 4k
          2002 VW Golf GT TDI
          2016 VW Passat BiTDI

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          • #6
            16? holy sh*t. So you must boost at 21 hold around 19 and then level off at 16 at 6500 RPM's?

            QuA
            2008 BMW 135i | M Package | JB3 | DCI | BMW Performance Exhaust

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            • #7
              He's got a TDI.
              Neil
              '03 Silver Jetta 1.8T - gone, but not forgotten


              mods to my car

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              • #8
                hah, nice try.
                "I live my life a Quarter Pounder at a time. For those 10 seconds or less, I'm not hungry."

                http://www.xs4all.nl/~bbrother/sigs/oizo.gif

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                • #9
                  LOL too funny Qua.... honest mistake..... prolly a little whiny at 6500
                  Dale Willimus

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                  • #10
                    LOL shiaza! haha.

                    QuA
                    2008 BMW 135i | M Package | JB3 | DCI | BMW Performance Exhaust

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                    • #11
                      Originally posted by QuA
                      16? holy sh*t. So you must boost at 21 hold around 19 and then level off at 16 at 6500 RPM's?

                      QuA
                      i've never taken my car up to that rpm range. there is no need. ahaha
                      2002 VW Golf GT TDI
                      2016 VW Passat BiTDI

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                      • #12
                        I hold about 13-14 at 6500. (opened waste gate)
                        ABD Turbo Inlet | Autothority CAI | APR DP | GReddy CB | Forge 007 DV | Neuspeed Sports | Axis Supermesh 18" | ABD Badgeless Grill | Bora and Turbo Badges | Powered by Volkswagen Pads | Disabled DRLs | Duel breaklight conversion

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                        • #13
                          14 at 6500? I dunno...
                          KR
                          Porsche 991 Carrera S

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                          • #14
                            Thats high
                            2008 BMW 135i | M Package | JB3 | DCI | BMW Performance Exhaust

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                            • #15
                              First of all, we all know we're responding to a 3 month old thread, right?

                              Second, I don't know a lot about these things (I really should just put that in my sig so I don't have to type it everytime I respond to a semi-technical post), but isn't 14 PSI about what you'd expect from a 1 bar chip? Not that I see a chip in his list of mods. Maybe disabling the DRLs adds boost.
                              Pat
                              Driver Found: Camber Wanted

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