misfire issues on boost and solutions.

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  • Jamo
    Retired OG Mod
    • Mar 2004
    • 21750
    • Country: United Kingdom

    #46
    Originally posted by GazzaG60
    well i have managed to dial in 1.75bar. its not done yet an in all honesty i need to restructure the tables and req_fuel now. ill start to write a new map.

    im still trimming out fuel. the 044 is a lot stronger than the aby fish tank spesh. i can see its strength at a few rpm points. especially high up. i had 1.3 bar about spot on. its now slightly rich showing it was going full at 1.3 bar. every bit i trim out it picks up a little stronger.

    if i can see 2 bar id think maybe thats towards the limits of a single 044.
    Aron ran over 600 bhp with a single 044, biggest restriction are the stock fuel lines which aren't exactly a cheap thing to upgrade though

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

      #47
      that is good, as my intetion is the 500hp mark

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      • GazzaG60
        S2Forum Freak
        • Mar 2007
        • 4133
        • Country: United Kingdom

        #48
        i still have some headroom then. i thought the lines in the tank were skinny

        fuel lines are next. -6 to the rail then the 2 pumps. if i ever need it.

        btw im back on standard plugs. the ik24's were too cold. they were fouling on cruise but on high rpm boost felt good. back to the best of both worlds. not sure the standards are as good on boost but you cant have it all. may dig her out after and trim some more fuel out.

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        • bernsaudi
          S2Forum Maniac
          • Feb 2007
          • 592
          • Country: United Kingdom

          #49
          Originally posted by diesel des
          I have a set of the 034 coil packs and wiring kit if anyone is interested. PM me. Removed as i fitted the 1.8T units as they look better. The 1.8T kit runs fine at 450 ish bhp on LPG (GAS) on stock plugs and aan ecu. Just for info...
          Hello, just dug this out of a thread and was wondering what gas regulator you are using, I am about to gas mine and would appreciate any pointers! Cheers, Bernie.

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          • diesel des
            S2Forum Possessed
            • Feb 2004
            • 3896

            #50
            I'm using 2 kme gold vapourisors along with magic jet injectors. The vapourisors do about 370 HP each, and on their own top out at chipped rs2 power. I had to add a second one for my power output. The injectors are rated at 75 HP each, but from experience seem to easily flow 500 HP a set.

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            • bernsaudi
              S2Forum Maniac
              • Feb 2007
              • 592
              • Country: United Kingdom

              #51
              Hello, I cannot find the output pressure for those regs, what pressure are they running output at? I assume they are a higher pressure than what you are running your turbo at, is this the case? If you are running a 2 bar turbo, should they not be outputting at 3 bar?
              Ta!

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              • diesel des
                S2Forum Possessed
                • Feb 2004
                • 3896

                #52
                No, they work like a petrol fuel pressure regulator. So mine is set at about 1.25 bar. So that's above inlet manifold pressure. Cheers des

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                • JP
                  S2Forum Extremist
                  • Mar 2007
                  • 1858
                  • Country: United Kingdom

                  #53
                  3 things.

                  1 - check there is no frothing in the header tank, I've seen missfire coming from nowhere on very mild Headgasket failure. Fine on part throttle feeding missfire on WOT.

                  2 - never run Denso plugs on VAG FI engines. I've seen more written of heads than you can shake a stick at running Denso's. Favourites are tips going out the sidewall of the heads.

                  3 - if buying 034 coil packs be prepared to fork out for some decent spark leads as they arc out through the shield and boots on 1.8bar boost pressures.
                  UrS6 Stroker + HTA3586 =

                  Comment

                  • JP
                    S2Forum Extremist
                    • Mar 2007
                    • 1858
                    • Country: United Kingdom

                    #54
                    Sorry 4 - almost forgot S2 in France pulled 700 on stock lines with 10bar 044 fuel pump.
                    UrS6 Stroker + HTA3586 =

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