Engine running at last but issues....

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  • Acidburn
    S2Forum Obsessed
    • Jun 2007
    • 13459
    • Country: United Kingdom

    #31
    Yeah it should be about 10-11 psi iirc or more (i'm not sure but dest was saying something about 15-16psi)

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    • 20Vcqdriver
      S2Forum Maniac
      • Jun 2007
      • 829
      • Country: United Kingdom

      #32
      Originally posted by Acidburn
      Yeah it should be about 10-11 psi iirc or more (i'm not sure but dest was saying something about 15-16psi)
      Would only expect that with a set of uprated chips fitted. 3B does not have overboost facility....unfortunately.
      1986 Coupe q - 2281cc 3B, chargecooler, 2.75" exh & downpipe, ported head, water injection, CGR box, modified MD357 turbo, 440cc injectors, high power coil.
      2004 A4 2.5TDi convertible, re-mapped to 180bhp
      2011 A5 sportback 3TDi-Backbox delete, remap

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      • Acidburn
        S2Forum Obsessed
        • Jun 2007
        • 13459
        • Country: United Kingdom

        #33
        Mine with a chip gets between 21-25 depending what mood its in.

        I'm sure its above 11, there is threads on here saying what to expect from a 3b.

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        • Prophet_dlx
          S2Forum Addict
          • Nov 2007
          • 262
          • Country: Luxembourg

          #34
          Pressure in a 3B is 0,85 bar x 14.5 = 12.33 psi I think
          RCN

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          • 20Vcqdriver
            S2Forum Maniac
            • Jun 2007
            • 829
            • Country: United Kingdom

            #35
            Originally posted by Prophet_dlx
            Pressure in a 3B is 0,85 bar x 14.5 = 12.33 psi I think
            Just found an article from 1991 that states that during the re-development of the RR (Ur q) into the 3B that boost was reduced to a max of 0.75bar with tweaks made to the ECU to ensure 220bhp so laong as 98 octane fuel was used.
            On the way home last night max in second was just shy of 0.6bar, but in 6th 0.7bar was achieved, so pretty much right or should I get 0.7bar in all gears?
            1986 Coupe q - 2281cc 3B, chargecooler, 2.75" exh & downpipe, ported head, water injection, CGR box, modified MD357 turbo, 440cc injectors, high power coil.
            2004 A4 2.5TDi convertible, re-mapped to 180bhp
            2011 A5 sportback 3TDi-Backbox delete, remap

            Comment

            • Prophet_dlx
              S2Forum Addict
              • Nov 2007
              • 262
              • Country: Luxembourg

              #36
              If your boost is at 0,4 bar your in the ecu's safe mode.
              It should keep 0.8 bar from around 2000 rpm up to... i don't know but for quite long
              RCN

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              • 20Vcqdriver
                S2Forum Maniac
                • Jun 2007
                • 829
                • Country: United Kingdom

                #37
                sorted

                Went to Tim Coopers last who read the codes and found I had an open circuit on the intake air temp sender that sits on the top of the inlet manifold. Resoldered back on...very carefully and no more error codes. Picks up like it should now and hope there are no more gremlins for a while .
                1986 Coupe q - 2281cc 3B, chargecooler, 2.75" exh & downpipe, ported head, water injection, CGR box, modified MD357 turbo, 440cc injectors, high power coil.
                2004 A4 2.5TDi convertible, re-mapped to 180bhp
                2011 A5 sportback 3TDi-Backbox delete, remap

                Comment

                • Fat Audi 80
                  Super Moderator
                  • Jan 2004
                  • 10547
                  • Country: England

                  #38
                  Brilliant, thanks for the feedback, one to look out for in the future.

                  Cheers,

                  Steve.

                  P.S. There is a Fault code reader available in the group buy area if you need one....
                  The Perfectionist
                  sigpic
                  Audi Class Concours winner Stoner Park 2014, ADI Concours D'Elegance Class Winner 2008, Runner up 2014. Winner, S2Forum Show'n'Shine Billing 2006 & 2008.

                  Comment

                  • Acidburn
                    S2Forum Obsessed
                    • Jun 2007
                    • 13459
                    • Country: United Kingdom

                    #39
                    Glad you got it sorted, what sort of readings you getting now for performance?

                    Comment

                    • 20Vcqdriver
                      S2Forum Maniac
                      • Jun 2007
                      • 829
                      • Country: United Kingdom

                      #40
                      performance

                      Took 2 values using the speedo and stopwatch yesterday and car will do 3.1secs 30-50 in 3rd and 4.2secs from 50 -70 in 4th. Once RR session done will be fitting these 265bhp chips I have been given, Keen to see what difference it makes to these figures.
                      1986 Coupe q - 2281cc 3B, chargecooler, 2.75" exh & downpipe, ported head, water injection, CGR box, modified MD357 turbo, 440cc injectors, high power coil.
                      2004 A4 2.5TDi convertible, re-mapped to 180bhp
                      2011 A5 sportback 3TDi-Backbox delete, remap

                      Comment

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