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  1. #1
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    Performance Box Testing and Questions

    I did some runs today 30-100 mph or so all 3rd gear pulls. The Vbox seems to store only some of the data

    Anyway here is a pic (I drive like a slug in 1st and 2nd gear because I have a new clutch)

    Click here to enlarge

    I am trying to use their online software but am doing some things wrong

    Best times but many of these I could only get from the software files

    30-80 mph 5.1
    60-100 mph 3.4
    30-90 mph 6.32
    30-100 mph 7.0
    2005 Porsche 996 TTS RWD - Eurodyne 60-130 in 6.50s
    2015 Audi A3 2.0 TFSI - Eurodyne 0 - 100 in 10.67s
    2015 McLaren 650S (RHD) - UK - 1/3rd owner yet to drive


    Click here to enlarge



  2. #2
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    IATS got to 45C on these runs (113F)..... is that too high ?

    Car seems to be at limits for MAF and K24s on this boost and load etc
    2005 Porsche 996 TTS RWD - Eurodyne 60-130 in 6.50s
    2015 Audi A3 2.0 TFSI - Eurodyne 0 - 100 in 10.67s
    2015 McLaren 650S (RHD) - UK - 1/3rd owner yet to drive


    Click here to enlarge



  3. #3
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    1 out of 1 members liked this post. Reputation: Yes | No
    @Group.america what are your mods and did you log any of these runs?
    Click here to enlarge

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    Click here to enlarge Originally Posted by dzenno@PTF Click here to enlarge
    @Group.america what are your mods and did you log any of these runs?

    yea I logged all of them

    Car is

    2005 Turbo S with K24s
    Injectors ID1000
    Exhaust = AWE GT2 high flow cats
    EVOMS vflow air intake - Hitachi
    Wallbro E85 400 HPFP
    1 step colder spark plugs
    RWD - Ohlins DFV suspension
    GT2 alignment

    Curb weight with me, full tank of gas and spares etc = 3480 lbs

    Car is RWD, I did the pulls with my spare and tools in as the front was getting air born on any aggressive launch

    Eurodyne tuning done by Tim941NYC at 1.2 bar

    I will download the Eurodyne data logs next... I am still working out the VBOX thingy as it does delete some data so I am doing something wrong

    I did 2 more pulls today in 3rd and did 30-80 mph = 5.0 secs

    MAF maxes out from 3500 rpm - 7000 rpm at about 1350, so I may go MAFLESS after summer but K24s etc seem to be at about their limits
    Last edited by Group.america; 06-26-2014 at 09:01 AM.
    2005 Porsche 996 TTS RWD - Eurodyne 60-130 in 6.50s
    2015 Audi A3 2.0 TFSI - Eurodyne 0 - 100 in 10.67s
    2015 McLaren 650S (RHD) - UK - 1/3rd owner yet to drive


    Click here to enlarge



  5. #5
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    2005 Porsche 996 TTS RWD - Eurodyne 60-130 in 6.50s
    2015 Audi A3 2.0 TFSI - Eurodyne 0 - 100 in 10.67s
    2015 McLaren 650S (RHD) - UK - 1/3rd owner yet to drive


    Click here to enlarge



  6. #6
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    The day before car got a CEL for the O2 sensor, P1133, cleared code and car is fine, seemed to go a bit haywire with the airconditioning on.... but I have read MAF/IAT sensors freak out a bit on these cars

    of note, these times are much slower than what I was doing in May, from rpm vs rpm

    55F outside 85F outside
    21-May 25-Jun
    2015 22.6291 2085 30 51.392
    2513 23.7891 2530 37 52.472
    4044 26.1391 E20 4010 54.922
    6159 27.4791 RWD 6018 57.302
    6750 28.111 3405 lbs 6750 100 58.372
    2500-6150 3.69 2500-6000 4.83
    2000-6600 5.48 2000-6750 6.98
    Last edited by Group.america; 06-26-2014 at 09:12 AM.
    2005 Porsche 996 TTS RWD - Eurodyne 60-130 in 6.50s
    2015 Audi A3 2.0 TFSI - Eurodyne 0 - 100 in 10.67s
    2015 McLaren 650S (RHD) - UK - 1/3rd owner yet to drive


    Click here to enlarge



  7. #7
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    2005 Porsche 996 TTS RWD - Eurodyne 60-130 in 6.50s
    2015 Audi A3 2.0 TFSI - Eurodyne 0 - 100 in 10.67s
    2015 McLaren 650S (RHD) - UK - 1/3rd owner yet to drive


    Click here to enlarge



  8. #8
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    This is a 996 correct? I'd change your logging for boost from metric to imperial so we can see boost in PSI instead of hPa.

    Looking at your requested vs. actual boost you're making about ~3psi less at 6k rpm than you're targetting in that range in the tune. Given your duty cycle is maxed (at/around 100%) I'd venture to think that you have a major boost leak. You're only hitting about 15.5psi at 6k rpm. I'd do a boost leak test.
    Click here to enlarge

  9. #9
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    I get a DC% only about 46% at 6000 rpm.... the car just had a new clutch put in it and the RWD conversion

    I will ask Tim about the leaks but given the much slower time/s then I was doing back in May you are probably right

    Will do a test over weekend for leaks

    Thx
    2005 Porsche 996 TTS RWD - Eurodyne 60-130 in 6.50s
    2015 Audi A3 2.0 TFSI - Eurodyne 0 - 100 in 10.67s
    2015 McLaren 650S (RHD) - UK - 1/3rd owner yet to drive


    Click here to enlarge



  10. #10
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    Click here to enlarge Originally Posted by Group.america Click here to enlarge
    This log is showing your duty cycle pegged high.
    Click here to enlarge

  11. #11
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    those times def seem a bit sluggish... i am free saturday morning if you need a hand doing anything @Group.america
    09 6AT 335i Coupe M-Sport - SOLD
    Current - 16 Jeep Wrangler - Few Mods
    Looking for a n54 project e90/e82

  12. #12
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    I calculate DC% = rpm x injection time / 1200

    Am I doing it wrong , calculating it wrong ???

    I see the boost differences on charts, will look at on weekend, thanks for the help

    I also had new radiator done so there could be leaks anywhere and everywhere
    2005 Porsche 996 TTS RWD - Eurodyne 60-130 in 6.50s
    2015 Audi A3 2.0 TFSI - Eurodyne 0 - 100 in 10.67s
    2015 McLaren 650S (RHD) - UK - 1/3rd owner yet to drive


    Click here to enlarge



  13. #13
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    Click here to enlarge Originally Posted by dzenno@PTF Click here to enlarge
    This log is showing your duty cycle pegged high.

    Sorry I see you mean boost duty... I think the K24s really max out at these levels above 1.1 bars, so I will probably have to upgrade turbos, which means new ICs, probably rods to handle extra torque, so I may jusy fix the boost leaks and detune it with my Eurodyne down to 1.1 bars max
    2005 Porsche 996 TTS RWD - Eurodyne 60-130 in 6.50s
    2015 Audi A3 2.0 TFSI - Eurodyne 0 - 100 in 10.67s
    2015 McLaren 650S (RHD) - UK - 1/3rd owner yet to drive


    Click here to enlarge



  14. #14
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    Click here to enlarge Originally Posted by ChuckD05 Click here to enlarge
    those times def seem a bit sluggish... i am free saturday morning if you need a hand doing anything @Group.america

    thx mate, but I have the missus' family out here, her brother in from Chicago etc... rrally appreciate the offer, will worry about it thereafter... I just checked some hoses and the ones at the Ypipe need some tightening etc

    Yeah times 1.5 s slower then before on some runs
    2005 Porsche 996 TTS RWD - Eurodyne 60-130 in 6.50s
    2015 Audi A3 2.0 TFSI - Eurodyne 0 - 100 in 10.67s
    2015 McLaren 650S (RHD) - UK - 1/3rd owner yet to drive


    Click here to enlarge



  15. #15
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    Appears my wastegates are stock, so will upgrade and also replace Dvs as well as do other leak tests...

    Would the big woosh sound at about redline be the wastegates blowing ?
    2005 Porsche 996 TTS RWD - Eurodyne 60-130 in 6.50s
    2015 Audi A3 2.0 TFSI - Eurodyne 0 - 100 in 10.67s
    2015 McLaren 650S (RHD) - UK - 1/3rd owner yet to drive


    Click here to enlarge



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    hey buddy glad you have your car back! and good time at 1.2bar... looking at your log you can see a small spike around 4400 rpm and you boost request is fighting to ! that is maybe indicating you have a boost leak ! im in that process with a check valve and fpr vacuum line popped out ! lots of fun.. i think every oil change is good to do a boost leak test imo



    Click here to enlarge Originally Posted by Group.america Click here to enlarge
    I get a DC% only about 46% at 6000 rpm.... the car just had a new clutch put in it and the RWD conversion

    I will ask Tim about the leaks but given the much slower time/s then I was doing back in May you are probably right

    Will do a test over weekend for leaks

    Thx

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    Click here to enlarge Originally Posted by Group.america Click here to enlarge
    Appears my wastegates are stock, so will upgrade and also replace Dvs as well as do other leak tests...

    Would the big woosh sound at about redline be the wastegates blowing ?
    assuming the 996 is similar to the 997.1, I been thinking about boost leak checking. And unplugging the boost hose from the turbos seems to be the best option.
    Click here to enlarge
    997.1 tt
    Kline 200cell exhaust
    997.2/GT2RS IC's
    Cobb E85 custom stage3 tune by Mitch
    ID1000 injectors
    Sachs stage 2.5 clutch

  18. #18
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    Click here to enlarge Originally Posted by xbox_fan Click here to enlarge
    assuming the 996 is similar to the 997.1, I been thinking about boost leak checking. And unplugging the boost hose from the turbos seems to be the best option.
    Yeah, will start Monday after all the outlaws leave
    2005 Porsche 996 TTS RWD - Eurodyne 60-130 in 6.50s
    2015 Audi A3 2.0 TFSI - Eurodyne 0 - 100 in 10.67s
    2015 McLaren 650S (RHD) - UK - 1/3rd owner yet to drive


    Click here to enlarge



  19. #19
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    Okay, I checked all of my old runs that were datalogged and I have the same type charts across the board, but since the old tunes I have had all of the mods done by Tim941NYC and done previous leak tests with no problem/s....

    I did a quick boost leak test and will do more next week in thorough detail and will rezip tie all the vaccuum hoses etc

    BUT could this car being doing this because

    1. The MAF is at it's absolute limit (should we go MAFLESS)
    2. Stock wastegates are above limit (I need the AMS 1+ bar wastegates)
    3. I need aftermarket DVs
    4. K24s are at maximum boost at 1.1 bars or so

    If so, should I just detune it to 1.1 bars or so and log again and see if this problem is the same.... the problem seems to start near max torque and at boost >> 2100 hpa
    2005 Porsche 996 TTS RWD - Eurodyne 60-130 in 6.50s
    2015 Audi A3 2.0 TFSI - Eurodyne 0 - 100 in 10.67s
    2015 McLaren 650S (RHD) - UK - 1/3rd owner yet to drive


    Click here to enlarge



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