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stock boost levels for 1.9 TDI ?

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  • stock boost levels for 1.9 TDI ?

    Hi all.

    can someone please tell me what the factory boost level is for the 1.9 PD TDI mk5 Golf ?

    i read somewhere that it's 2.1 bar ? that sounds a little high to me.
    that's 30.87 psi. that sounds like lots for a stocker.....(my first experience with a diesel, so i have no idea what's normal)

    im about to buy a boost gauge, and wanna make sure i get one that has the correct range.
    i plan to have the ecu flash tuned at a later date too, so some leeway will be needed, as i don't want to be replacing the gauge in the future.

    can anyone shed some light ?

    Jason.
    05 Golf 1.9 TDI comfortline DSG

  • #2
    I've heard its around 18-20?

    I need to buy a boost guage aswell and check it out, I too am curious!
    VW: it aint just a car, its a way of life
    There are few things more satisfying in life than finding a solution to a problem and implementing it
    My Blog: tinkererstales.blogspot.com.au

    Comment


    • #3
      Originally posted by 85turbo View Post
      Hi all.

      can someone please tell me what the factory boost level is for the 1.9 PD TDI mk5 Golf ?

      i read somewhere that it's 2.1 bar ? that sounds a little high to me.
      that's 30.87 psi. that sounds like lots for a stocker.....(my first experience with a diesel, so i have no idea what's normal)

      im about to buy a boost gauge, and wanna make sure i get one that has the correct range.
      i plan to have the ecu flash tuned at a later date too, so some leeway will be needed, as i don't want to be replacing the gauge in the future.

      can anyone shed some light ?

      Jason.
      From 0.9 Bar @ idle up to 2.1 Bar
      Last edited by Transporter; 17-07-2009, 08:34 AM.
      Performance Tunes from $850
      Wrecking RS OCTAVIA 2 Link

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      • #4
        Thanks Transporter.

        2.1bar! That's impressive.
        I'll head out on the weekend and pick up a 35psi gauge.

        Hopefully that's enough to cover any changes that are made
        once I eventually get round to the re flash.

        Jason.
        05 Golf 1.9 TDI comfortline DSG

        Comment


        • #5
          Diesels tend to run almost twice the boost of a petrol car.

          Gavin
          optimumcode@gmail.com | https://www.vwwatercooled.com.au/for...i-;-79012.html | https://www.facebook.com/TTY-Euro-107982291992533

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          • #6
            im learning lots about this little diesel.
            being my first oiler and all.... it certainly wont be my last that's for sure.....

            Jason.
            05 Golf 1.9 TDI comfortline DSG

            Comment


            • #7
              Just for the record, if you run the sender from the inlet manifold, to get true pressure rather than straight out of the turbo for a feel good reading, my stock GT TDI runs 23-24psi maxed. Looks a bit silly on my 0-60psi gauge....for now.
              Last edited by Greg Roles; 17-07-2009, 05:17 PM.
              2014 Skoda Yeti TDI Outdoor 4x4 | Audi Q3 CFGC repower | Darkside tune and Race Cams | Darkside dump pDPF | Wagner Comp IC | Snow Water Meth | Bilstein B6 H&R springs | Rays Homura 2x7 18 x 8" 255 Potenza Sports | Golf R subframe | Superpro sways and bushings | 034 engine mounts | MK6 GTI brakes |

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              • #8
                i plan to tap the pipe after the intercooler, and before the inlet.
                so this should take into any pressure drop across the cooler.

                Jason.
                05 Golf 1.9 TDI comfortline DSG

                Comment


                • #9
                  Boost

                  Hi,
                  2.1 bar is absolute pressure which is atmospheric air pressure + pressure generated by turbo.
                  Atmospheric is around 1.0 bar depending on height over sea level.
                  Hope this helps?

                  Originally posted by 85turbo View Post
                  Hi all.

                  can someone please tell me what the factory boost level is for the 1.9 PD TDI mk5 Golf ?

                  i read somewhere that it's 2.1 bar ? that sounds a little high to me.
                  that's 30.87 psi. that sounds like lots for a stocker.....(my first experience with a diesel, so i have no idea what's normal)

                  im about to buy a boost gauge, and wanna make sure i get one that has the correct range.
                  i plan to have the ecu flash tuned at a later date too, so some leeway will be needed, as i don't want to be replacing the gauge in the future.

                  can anyone shed some light ?

                  Jason.

                  Comment


                  • #10
                    so what your saving is that i will only see 16.17psi on the gauge (ie:1.1 bar) ?

                    1 bar is roughly equal to 14.7 psi, or like you say one atmosphere.

                    This is starting to get confusing..... lol

                    Jason.
                    05 Golf 1.9 TDI comfortline DSG

                    Comment


                    • #11
                      Correct

                      Hi, yes if you connect a boost gauge you will see 16-17 psi.
                      If you use vag-com it records absolute boost pressure as mentioned in my previous post.
                      If you live at high altitude there is less air pressure say .9 bar and you add 1.1 bar which totals give 2 bar, 1.5 psi less than at sea level.
                      Hope this helps?

                      Originally posted by 85turbo View Post
                      so what your saving is that i will only see 16.17psi on the gauge (ie:1.1 bar) ?

                      1 bar is roughly equal to 14.7 psi, or like you say one atmosphere.

                      This is starting to get confusing..... lol

                      Jason.

                      Comment


                      • #12
                        So the 1.9 is lower boost than 2.0 based on this information?

                        Comment


                        • #13
                          Originally posted by mikinoz View Post
                          So the 1.9 is lower boost than 2.0 based on this information?
                          likely to be - it produces less power stock

                          hahaha - i run 22psi guage.... gee thats nearly GT levels. wait till i get my t3 on there... if ever
                          '07 Touareg V6 TDI with air suspension
                          '98 Mk3 Cabriolet 2.0 8V
                          '99 A4 Quattro 1.8T

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                          • #14
                            The gauge in our car (2.0TDI) can hit 30 when you give it some kick, but it soon backs off thanks to VNT reducing the pitch.

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                            • #15
                              so, figuring in that i will probably be having the ecu re flashed at a later date, should i get a 30 or 35 psi gauge ?

                              Jason.
                              05 Golf 1.9 TDI comfortline DSG

                              Comment

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