Some info+help about my RS2...

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  • A80Avant
    S2Forum Obsessed
    • Sep 2005
    • 10873
    • Country: Greece

    #1

    Some info+help about my RS2...

    Hello every1,
    as you know i recently replaced my turbo with a new RS2 turbo due to a small crak on the hotside.(im sure paul is still trying to find it,but he will too give up eventually!)

    Anyway,i did my 1000kms of slow opening up the new turbo,not pushing it hard and now that i have exceed that amount of kms,i was looking again at the boost gauge for indications regarding my pressure and the boost in general.

    I see a good 1.6bar on 5th and 6th gear,around 1.4bar on 4th gear and the 3d goes around 1.4bar and a bit less.I dont bother on 2nd cause it goes up to around 1bar.My vacuum is -0,8 to -0,9bar when driving with gear and not stepping on the gas,while it stays on -0,6bar on idle.(neutral)

    Here are my concerns and and questions.

    1)anyone that uses the MTM chip,are these good numbers?Are you getting the same figures here or should i be looking at my EM for pressure drops as well,since everything else is changed(samcos,intrercooler mod,new turbo,new WGFV,new dump valve-which is barely noticable i might add,all original parts bought from audi-).

    2)if i change the wastegate spring with a stronger one,and keep my MTM chip,what will happen?Will i be getting limp modes all the way?Will i stress the engine?Will i burn the engine?I have found a spring on ebay.de which seems to be the mtm spring,but the seller does not mention.I have seen it matches the mtm spring on other sites though.

    3)i also bought me a K&N filter to use on long trips where the air is cleaner.The previous owner did use it and had no problems with it,and also he had bever cleaned it !

    4)finally changing the MAF with a bigger,or better one while keeping the rest parts the same,has any effect whatsoever?I mean if i find a sport quattro MAF and use it,without any other changes,what will the effects be on the car?Is it wise?is it stupid?is it useless?

    thanks for the time you took to read all that above!
    cheers
    Vasilis
  • A80Avant
    S2Forum Obsessed
    • Sep 2005
    • 10873
    • Country: Greece

    #2
    anyone?noone?

    Comment

    • 4WheelDrifter
      S2Forum Zealot
      • Oct 2004
      • 5773
      • Country: Devon

      #3
      I wouldn't change the WG spring or MAF without a remap.
      The numbers sound ok to me. But I don't know about the MTM chip. You get more boost in higher gears due to the load on the engine.
      SS

      Comment

      • alg
        S2Forum Extremist
        • Apr 2004
        • 1160

        #4
        Hi and sorry for late input
        1. Standard boost 1.3 (1.4 overboost) So your MTM chip would be 'stage 1' quoted to be good for 330bhp.
        2. Do not change WG spring unless full remap.
        3. IMHO K&N etc are a waste of time, effort and money. Use standard and protect that MAF
        4. RS2 MAF good for 400bhp + so no advantage in SQ MAF. IIRC the internal wiring differs to the plug and nobody could track down details. Search the forum and you will find more.

        BTW enjoy it
        Alastair
        RS2

        Comment

        • A80Avant
          S2Forum Obsessed
          • Sep 2005
          • 10873
          • Country: Greece

          #5
          thanks alg,
          so basically the MTM chip what it does is that it raises the boost pressure a bit higher than it already is as OEM,that is whay im seeing 1.5 and 1.6bar on those gears?
          this means im ok?

          On the K&N filter,i think even with that old dirty one,i did see some difference with the paper standard one,so i was thinking of using the K&N on the highways,on holidays etc,and change to the regular one when i use the car in the city.I will see...

          thanks for all the info...
          My future lies with MRC when i will plan my trip over there for an engine rebuild and a good remap!

          as for now,i thank god i have boost!
          cheers!
          Vasilis

          Comment

          • alg
            S2Forum Extremist
            • Apr 2004
            • 1160

            #6
            In summary...........all is OK but I remain unconvinced re K&N and even more so a dirty one !!
            Alastair
            RS2

            Comment

            • A80Avant
              S2Forum Obsessed
              • Sep 2005
              • 10873
              • Country: Greece

              #7
              no i mean he used to have one and never cleaned it.I bought me a new one+a cleaning kit.we'll see

              thanks Alg for all the help!
              cheers
              Vasilis

              Comment

              • A80Avant
                S2Forum Obsessed
                • Sep 2005
                • 10873
                • Country: Greece

                #8
                hey Alg,does your ECU have the mtm chip?I finally sorted out my ECU reading code problem and now i get a set of numbers and figures that indicate the type of chip that i have.I dont remember them now,but i will get them posted tomorrow.ANyone else knows if he gets the same so i can track what kind of chip i really have??Is it mtm or some other tuner?

                Comment

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