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Thread: Polo Dyno Day - 9th August!!

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  1. 13-08-2008, 05:06 PM #1
    GT3
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    Sam, notice how your peak begins to drop off around 5300rpm, ..that's pretty common, as boost begins to cut-off. A high-flow muffler would give you more slighty more power, and would hold power longer, bc when the exhaust is running at those speeds, the stock muffler will begin to choke flow. That's what my testing confirmed as well. How this translates on the road (I mean track ) ...with the stock muffler, your car will slow down at 160kmh, with a high-flow, it will pull strong to 200kmh.
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  2. 13-08-2008, 06:29 PM #2
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    Quote Originally Posted by GT3 View Post
    Sam, notice how your peak begins to drop off around 5300rpm, ..that's pretty common, as boost begins to cut-off. A high-flow muffler would give you more slighty more power, and would hold power longer, bc when the exhaust is running at those speeds, the stock muffler will begin to choke flow. That's what my testing confirmed as well. How this translates on the road (I mean track ) ...with the stock muffler, your car will slow down at 160kmh, with a high-flow, it will pull strong to 200kmh.
    Quite right Neil, ... I saw Eddy's and it doesn't dip at the 5,500 mark.

    Dave
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  3. 13-08-2008, 07:07 PM #3
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    Quote Originally Posted by DaveMack View Post
    Quite right Neil, ... I saw Eddy's and it doesn't dip at the 5,500 mark.

    Dave
    Eddy's actually seems to dip more at 5500rpm but then it goes up again and drops again.

    Blue is 'stage 1' and red is 'stage 2'

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  4. 13-08-2008, 07:09 PM #4
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    Quote Originally Posted by tosspot View Post
    Eddy's actually seems to dip more at 5500rpm but then it goes up again and drops again.

    Blue is 'stage 1' and red is 'stage 2'


    Damn ... so it does. Whose was I thinking of then?

    Dave
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  5. 13-08-2008, 07:13 PM #5
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    Quote Originally Posted by DaveMack View Post
    Damn ... so it does. Whose was I thinking of then?

    Dave
    Maybe backyard bandit (Jason).

    But his dumped fuel in like it was a Veyron - without the other benefits
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  6. 13-08-2008, 07:51 PM #6
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    Quote Originally Posted by tosspot View Post
    Maybe backyard bandit (Jason).

    But his dumped fuel in like it was a Veyron - without the other benefits
    come on veryon has nothing on me
    Quote Originally Posted by seangti View Post
    The price of the car rarely indicates driver ability/lap time.

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  7. 18-08-2008, 11:20 AM #7
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    Alex, have you done anything with the data you logged?
    Last edited by VW GTI; 18-08-2008 at 11:36 AM.
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  8. 13-08-2008, 07:50 PM #8
    GT3
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    Quote Originally Posted by tosspot View Post
    Eddy's actually seems to dip more at 5500rpm but then it goes up again and drops again.
    I wouldn't read too much into that dip, Polo GTIs are notorious for doing that on dynos. His car still manages to maintain peak power at 6000rpm...
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