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0-100km/h time with APR Stage 1 tune?

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  • #16
    Originally posted by noone View Post
    you should show more boost in a higher gear as there is more time for the boost pressure to grow, in 1st its over so quickly.

    lots of variables, could be a boost leak, could be a dodgy component, could be an overly sensitive knock sensor retarding timing. For me, logging or having someone log is really the only good way to know whats happening, it wont answer all your qns, but certainly does arm you with a lot more info.
    Thanks for your advice.

    I just did a 5th gear pull, starting from 2,500RPM, as you can see from the graph below, it took about 4 seconds to reach top boost of 17.73 PSI, then it dropped a bit and fluctuated between 15.44 and 16.86 PSI. Does it mean I have a boost leak?

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    • #17
      I once had a leak in my intake hose and it was extremely audible (big wooshing sound)
      Some say he was the Stig... all we know is that he drives a VW Transporter.
      Audi A3

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      • #18
        When I was changing my spark plugs a couple of weeks back, I noticed the copper coating inside my coil packs have worn off:



        does this affect my power output significantly? as long as there is still electrical contact, it shouldn't matter that much, right?

        I don't understand why VW would electrolyse copper onto plastic, it simple does not last, given the operating environment....

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        • #19
          Nothing to do with your power.

          That boost graph doesn't mean much either without knowing what the ECU requested. Did you do the graph from the bluetooth OBD transmitter?

          Wait until you get the lead, it's far better for doing this sort of thing.
          A better milestone for performance would be to do runs in a single gear from 70-110kmh or whatever fits in. At least doing this you remove the gear changes and driver out of the equation. Start at 60 with a full throttle and runs past 110, then cut out the section you want. Use the same piece of road each time.

          The only variables then would be the intake temps.

          You are still only recreating the dyno lottery on the street.

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

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          • #20
            Howdy, I've only done a few dry weather 0-100km runs and whilst I'm wouldn't back myself to get a car off the line, the mid to low 7's with a tune is what I got using my gtech GPS timer. I'm running a tune, pd160 air intake, forge dv and forge turbo intake pipe, otherwise all stock so I'd say your results are pretty well on the money and any improvement will be driver/grip related.

            As for technique, I tried launching with similarly low revs to get grip, but found my better time came from a 3000-3500 launch and let first gear spin out (within reason), which felt a little slower, but the g'forces and acceleration times don't lie

            When I boot my computer later ill add the acceleration times.
            Track Car: 06 Polo GTI Red Devil mkII
            Daily: 2010 VW Jetta Highline
            Gone but not forgotten: 08 Polo GTI
            ** All information I provide is probably incorrect until validated by someone else **

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            • #21
              This vid shows that high 5s/low 6s are certainly possible.

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              • #22
                I doubt a polo with only a tune and running street trim would do high 5's. I'd expect it to take a bit more than that.
                Track Car: 06 Polo GTI Red Devil mkII
                Daily: 2010 VW Jetta Highline
                Gone but not forgotten: 08 Polo GTI
                ** All information I provide is probably incorrect until validated by someone else **

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                • #23
                  Does pocket dyno count lol?

                  the 4 runs I have saved in there to 100 were 5.96, 7.01, 6.20 and 6.18 seconds.

                  PS. I think run #1 was slightly down hill and #2 was up hill. The last one was on a nice flat bit of (test track).
                  Last edited by philthy; 11-12-2012, 09:35 PM.

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