boost lag and fuel economy question

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  • hunker7
    S2Forum Possessed
    • Mar 2014
    • 3487
    • Home: Latvia Current: United Kingdom

    #106
    Checked DV and ir holds vacuum ok.

    I moved timing belt as well.

    Also, checked PCV system and clip on the small one way valve wad loose so I did that up, and put new clips on few more vacuum lines. Noticed temperature is now just over 90 (88 on 51st channel on climate control panel) and I done see full boost in 3rd (3rd@4200 ish rpm max boost before)
    Last edited by hunker7; 23 September 2015, 20:16.
    '93 Audi 100 Avant - R.I.P
    '92 Audi UrS4 Avant - SOLD
    '93 Audi UrS4 Avant
    '15 Audi A7 quattro 3.0 TDI

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    • newsh
      S2Forum Obsessed
      • Aug 2003
      • 16226
      • Country: United Kingdom

      #107
      Originally posted by hunker7
      and I done see full boost in 3rd (3rd@4200 ish rpm max boost before)
      What does this mean? ^^

      Did you find your vagcom lead yet?

      S2 Coupe 3B Project


      Ur quattro restoration

      S2 Avant

      Boost is the new rock and roll!
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      • hunker7
        S2Forum Possessed
        • Mar 2014
        • 3487
        • Home: Latvia Current: United Kingdom

        #108
        Remember when you said floor it in 3rd@2000rpm and see when full boost is reached? And I said about 4200 rpm, now it won't go past 2.2/2.3.

        I did find it, and no errors.
        '93 Audi 100 Avant - R.I.P
        '92 Audi UrS4 Avant - SOLD
        '93 Audi UrS4 Avant
        '15 Audi A7 quattro 3.0 TDI

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        • newsh
          S2Forum Obsessed
          • Aug 2003
          • 16226
          • Country: United Kingdom

          #109
          It gets weirder... You correct the timing and get less boost? Did you move the belt in the right direction? (sorry, clutching at straws..)

          S2 Coupe 3B Project


          Ur quattro restoration

          S2 Avant

          Boost is the new rock and roll!
          sigpic

          Comment

          • hunker7
            S2Forum Possessed
            • Mar 2014
            • 3487
            • Home: Latvia Current: United Kingdom

            #110
            Tell me about it. At one point seems it's better and then it seems it's worse/same.
            '93 Audi 100 Avant - R.I.P
            '92 Audi UrS4 Avant - SOLD
            '93 Audi UrS4 Avant
            '15 Audi A7 quattro 3.0 TDI

            Comment

            • newsh
              S2Forum Obsessed
              • Aug 2003
              • 16226
              • Country: United Kingdom

              #111
              Do you have another FPR you can try?

              S2 Coupe 3B Project


              Ur quattro restoration

              S2 Avant

              Boost is the new rock and roll!
              sigpic

              Comment

              • hunker7
                S2Forum Possessed
                • Mar 2014
                • 3487
                • Home: Latvia Current: United Kingdom

                #112
                One I have is pretty much new, bought a Bosch unit.
                '93 Audi 100 Avant - R.I.P
                '92 Audi UrS4 Avant - SOLD
                '93 Audi UrS4 Avant
                '15 Audi A7 quattro 3.0 TDI

                Comment

                • Error404
                  Super Moderator
                  • Mar 2007
                  • 19789
                  • Country: United Kingdom

                  #113
                  Originally posted by Error404
                  Have you checked for a restriction yet?
                  Panthero Coupé quattro 20vt
                  Indigo ABY coupé
                  Imola B6 S4 Avant

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                  • hunker7
                    S2Forum Possessed
                    • Mar 2014
                    • 3487
                    • Home: Latvia Current: United Kingdom

                    #114
                    I didn't no, as I need to get 17mm socket (forgot it in London)
                    '93 Audi 100 Avant - R.I.P
                    '92 Audi UrS4 Avant - SOLD
                    '93 Audi UrS4 Avant
                    '15 Audi A7 quattro 3.0 TDI

                    Comment

                    • hunker7
                      S2Forum Possessed
                      • Mar 2014
                      • 3487
                      • Home: Latvia Current: United Kingdom

                      #115
                      Taking out the downpipe bolt didn't go that well (sheared it) even though I was careful. Car still runs like a piece of ****. Seems like it runs worse than with timing supposedly out.

                      I don't think exhaust is blocked because when it was blocked on my V6 at one point car slowed down as in its not able to get rid of all the exhaust fumes. Nothing like this with the S4.
                      '93 Audi 100 Avant - R.I.P
                      '92 Audi UrS4 Avant - SOLD
                      '93 Audi UrS4 Avant
                      '15 Audi A7 quattro 3.0 TDI

                      Comment

                      • hunker7
                        S2Forum Possessed
                        • Mar 2014
                        • 3487
                        • Home: Latvia Current: United Kingdom

                        #116
                        Worth putting OEM chips back in?
                        '93 Audi 100 Avant - R.I.P
                        '92 Audi UrS4 Avant - SOLD
                        '93 Audi UrS4 Avant
                        '15 Audi A7 quattro 3.0 TDI

                        Comment

                        • newsh
                          S2Forum Obsessed
                          • Aug 2003
                          • 16226
                          • Country: United Kingdom

                          #117
                          Maybe Worth a try..
                          Have you checked for leaks on the vac line to the ECU?

                          S2 Coupe 3B Project


                          Ur quattro restoration

                          S2 Avant

                          Boost is the new rock and roll!
                          sigpic

                          Comment

                          • hunker7
                            S2Forum Possessed
                            • Mar 2014
                            • 3487
                            • Home: Latvia Current: United Kingdom

                            #118
                            I'm literally out if ideas at this point.
                            '93 Audi 100 Avant - R.I.P
                            '92 Audi UrS4 Avant - SOLD
                            '93 Audi UrS4 Avant
                            '15 Audi A7 quattro 3.0 TDI

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                            • Rikki Kitto
                              S2Forum Zealot
                              • Feb 2010
                              • 6276
                              • Country: England

                              #119
                              Check, check and recheck I am just running down boost leaks after the car was mapped 3 months ago with no leaks, found 4 last week and am checking again on Saturday

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                              • hunker7
                                S2Forum Possessed
                                • Mar 2014
                                • 3487
                                • Home: Latvia Current: United Kingdom

                                #120
                                Don't think it's a boost leak but I'll test it. All the sensors seem to be working, I will check TPS sensor.

                                BTW, couple of days ago I noticed car fails to pick up revs when I start it, if I rev it, it's all good.
                                '93 Audi 100 Avant - R.I.P
                                '92 Audi UrS4 Avant - SOLD
                                '93 Audi UrS4 Avant
                                '15 Audi A7 quattro 3.0 TDI

                                Comment

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