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Discussion in '308/328' started by mike996, Jan 23, 2010.

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  1. mike996

    mike996 F1 Veteran

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    #1 mike996, Jan 23, 2010
  2. Ferraripilot

    Ferraripilot F1 World Champ
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    #2 Ferraripilot, Jan 23, 2010
    I used pocketdyno. Both are incredibly accurate. Pocketdyno had my rear wheel horsepower within 2bhp of the actual dyno results. Consistently
     
  3. Racing-Baker

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    #3 Racing-Baker, Jan 24, 2010
    where to get this stuff??
     
  4. mike996

    mike996 F1 Veteran

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    #4 mike996, Jan 24, 2010
  5. Ferraripilot

    Ferraripilot F1 World Champ
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    #5 Ferraripilot, Jan 24, 2010
    They are both $13 on the iphone. There is a free version for pocketdyno as well. The only difference is that it will not show your dyno graph and only one car can be setup.
     
  6. GrayTA

    GrayTA F1 World Champ
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    #6 GrayTA, Jan 24, 2010
    Now thats some cool stuff...its making me want an iPhone now.


    PDG
     
  7. Pantera1523

    Pantera1523 Formula Junior

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    #7 Pantera1523, Jan 24, 2010
    Does anyone know if these apps work the same on the iPod Touch? Is it only using the built in accelerometer?
    Or do these apps tap into the GPS capability that the iPhone has but the iPod Touch does not?

    I was thinking of buying one of them but haven't gotten around to it.
     
  8. mike996

    mike996 F1 Veteran

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    #8 mike996, Jan 24, 2010
    It works totally with the internal accelerometer in the Iphone and Ipod touch. It does not use GPS in any way.

    I downloaded it for my iphone about an hour ago and can personally confirm that it works without GPS being on - it will measure the G force involved in rapidly moving the phone itself. Unfortunately, I don't have my Ferrari here in Mexico so I can't do any 0-60 or 1/4 mile runs in the 328 but I'll try it out in our Hyundai Santa Fe tomorrow. That should be pretty impressive! :)
     
  9. Davvinci

    Davvinci Karting

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    #9 Davvinci, Jan 24, 2010
    Last edited: Jan 24, 2010
    So then you should be able to set it up to measure the lateral Gforce for handling and be able to tell you how much you're pulling in a corner?
    That would be very cool.
     
  10. st@ven

    st@ven F1 Rookie

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    #10 st@ven, Jan 24, 2010
    Don't have an iphone but tempted buying one. Do I need a particular type?
     
  11. DriveAfterDark

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    #11 DriveAfterDark, Jan 24, 2010
    Nope, will work on all new iPhones.
     
  12. Pantera1523

    Pantera1523 Formula Junior

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    #12 Pantera1523, Jan 24, 2010
    Cool... I will go download it now for my iPod Touch and see how it works. Thanks for the input.
     
  13. Ferraripilot

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    #13 Ferraripilot, Jan 24, 2010
    Last edited: Jan 24, 2010
    A note on *exactly* how it needs to be used for most accurate measurements. The Iphone needs to be mounted *dead* steady in the car. The accelerometer is measuring the performance of the car, and of course in order to do this it has to move only as the car moves. I have found that with the 308, a mount is absolutely required. One cannot hold it in their hand, have a friend hold it, or anything else that may cause it to move. I mount mine using a Iphone holder with a suction cup to the windshield and it is rock steady. There are tons of mounts out there, but the big suction cup models have some serious linkage that allows for a rock steady mount. Also, the Iphone must be recalibrated just before doing a run. Not but not least, the 'ready' button is only pushed when the car is at a dead stop. That's how it's done.

    I was told the pocketdyno uses gps in coordination to the other measuring parameters? I will check it out further.
     
  14. mike996

    mike996 F1 Veteran

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    #14 mike996, Jan 25, 2010
    This thing seems to be great and one obvious value is to immediately tell you if that new exhaust system (or air filter or whatever) you installed did anything except make more noise!

    Then again...maybe getting one of these ISN"T such a good idea. :)


    Of course, to use it to evaluate changes, you would have to be sure to use the same launch procedure and same stretch of road every time to ensure the grade doesn't change and also account for wind if there is any (two way run). But you would not have to do any dump the clutch at hi RPM runs unless you wanted to - if there is a power change, it will still show up the same way as you power through the gears, regardless of how you launched the car.

    Pretty neat but I suspect that the aftermarket "performance" parts sales may suffer a bit after the "word" gets around that the "XYZ" exhaust (or whatever) that was supposed to be good for 15 HP did nothing! ;)

    But OTOH, there's nothing to stop anyone from fibbing and CLAIMING, "Hey, my Iphone says I got 15 more HP with my new XYZ exhaust" even if it showed nothing of the sort. That is the beauty of the internet - anyone can claim anything! :)
     
  15. Traveler

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    #15 Traveler, Jan 25, 2010
    I was tempted for a moment, but realized that this will just make me agonize about the performance of my car. It's easier to tell myself that my Mondi is as fast as a 355 if i have no proof. The proof will certainly not be in my favor. I vote for ignorance, I've found denial to be my friend.
     
  16. Ferraripilot

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    #16 Ferraripilot, Jan 25, 2010
    I swear the Iphone is a Godsend for the Ferrari community. If ever one wants to know their performance. Bam, it's right there. If ever one wants to see ones *actual* miles per hour rather than read their somewhat off Ferrari speedo, BAM (with my best Emeril voice), a GPS app in the Iphone gives real-time mph for ya.
     
  17. marc.l

    marc.l Karting

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    #17 marc.l, Jan 25, 2010
    Mercedes


    2004 AMG E55 compressor


    25 Jan 2010 17:05
    Acceleration







    0-10 MPH: 0.93 sec
    0-20 MPH: 1.76 sec
    0-30 MPH: 2.48 sec
    0-40 MPH: 3.19 sec
    0-50 MPH: 4.06 sec
    0-60 MPH: 4.94 sec
    0-70 MPH: 5.87 sec

    Elapsed Time




    60': 2.58 sec @ 29.3 MPH
    330': 6.01 sec @ 69.8 MPH
    1/8 mi: 8.92 sec @ 77.8 MPH
    1000': 11.99 sec @ 72.3 MPH

    Miscellaneous



    Max Speed: 79.2 MPH
    Max Acceleration: 0.68 G's
    Peak Horsepower: 428 HP


    Generated by Dynolicious

    My second run in the daily driver, in the wet on a not very good road, last dyno was 480 rwhp. Hope to get 0-60 down in the low 4`s. Will have a run in the 308 when the weather is better :)
     
  18. AZDoug

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    #18 AZDoug, Jan 25, 2010
    I see there is something called Dynomaster if you happen to have a Droid phone.

    I may use something like this in my Corvette, but probably not the Ferrari, as somethings are better left unknown. I already know what my HP and ETs and stuff are in the Corvette, but the lateral g force info would be useful

    Doug
     
  19. Ferraripilot

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    #19 Ferraripilot, Jan 25, 2010
    That is some kick a$$ acceleration Marc!
     
  20. jgoodman

    jgoodman F1 Rookie
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    #20 jgoodman, Jan 25, 2010
    Agree. And isn't sounding fast like it does fast enough? :)
     
  21. mike996

    mike996 F1 Veteran

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    #21 mike996, Jan 25, 2010
    "Max Speed: 79.2 MPH
    Max Acceleration: 0.68 G's
    Peak Horsepower: 428 HP "

    Uphill, downhill, or on level ground?

    Our Hyundai Santa Fe today showed 38 HP at WOT! :) But that was because we did the "run" up a steep hill so the acceleration/weight/time showed low HP since it took a long time to reach the speed. Did it on a steep downhill and it showed 165 HP.
     
  22. mk e

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    #22 mk e, Jan 25, 2010
    A buddy or mine a couple hours away just bought an older dynojet...now i just need to finish the engine and go have some fun.
     
  23. Racing-Baker

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    #23 Racing-Baker, Jan 26, 2010
    i'm planning on getting one. this seems like tons of fun!! :D
    what i don't understand is how can it calculate the hp??
     
  24. marc.l

    marc.l Karting

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    #24 marc.l, Jan 26, 2010
    On the flat, I live near the Lincolnshire fens in a area call South Holland, due to the total lack of hills. Miles of nothing and the test was done on a road call `seven mile staight`.
    Will be back again in the dry.....;)
     
  25. mike996

    mike996 F1 Veteran

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    #25 mike996, Jan 26, 2010
    Last edited: Jan 26, 2010
    "what i don't understand is how can it calculate the hp"

    It just calculates the time it takes to get to speed vs the weight (you have to input the weight of the vehicle including driver/passengers/other articles.) If the weight input is wrong, the HP will be wrong though the relative difference in HP after making changes will still be accurate as long as the weight and the road (uphill/downhill/level) remain the same.

    Just keep in mind that any external change that helps the car accelerate - tailwind or favorable grade change - will result in a higher HP reading.
     
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