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    Thread: The APR RS5 is here and ready to be modified!

    1. Forum Sponsor Arin@APR's Avatar
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      07-27-2012 04:04 PM #1
      We just took delivery of our latest development vehicle. Stay tuned for some very exciting and high horsepower updates!

      GoAPR.com | Facebook | YouTube | Twitter
      Phone: (800) 680-7921 Local Phone: +1 (334) 502-5181 Fax: +1 (334) 502-5180
      Address: APR LLC, 4800 US HWY 280 West, Opelika, AL 36801
      The bitterness of poor quality remains long after the sweetness of low price is forgotten.

    2. Forum Sponsor Arin@APR's Avatar
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      07-30-2012 03:48 PM #2
      Today I collected some acceleration data and I plan to do the same once fully modified from the same location. The road is straight but dips in the center. It begins down hill slightly and the remainder is uphill at a low grade. It's probably not best to compare the times to others, but since I will be doing all of our testing from the same spot, it will be comparable.

      The car is completely stock at this point.

      ESP/ASR off, Dynamic Mode, Sport Mode, Launch control enabled:

      Best times via the V-Box:

      0-60 mph: 4.3 seconds
      0-100 mph: 9.8 seconds
      60-120 mph: 9.5 seconds
      60-130 mph: 12.0 seconds

      We'll hit the dyno tomorrow morning stock and then move onto the exhaust.



      GoAPR.com | Facebook | YouTube | Twitter
      Phone: (800) 680-7921 Local Phone: +1 (334) 502-5181 Fax: +1 (334) 502-5180
      Address: APR LLC, 4800 US HWY 280 West, Opelika, AL 36801
      The bitterness of poor quality remains long after the sweetness of low price is forgotten.

    3. Junior Member
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      TTS 2011 APR stg I
      07-31-2012 10:33 AM #3
      Quote Originally Posted by Arin@APR View Post
      Today I collected some acceleration data and I plan to do the same once fully modified from the same location. The road is straight but dips in the center. It begins down hill slightly and the remainder is uphill at a low grade. It's probably not best to compare the times to others, but since I will be doing all of our testing from the same spot, it will be comparable.

      The car is completely stock at this point.

      ESP/ASR off, Dynamic Mode, Sport Mode, Launch control enabled:

      Best times via the V-Box:

      0-60 mph: 4.3 seconds
      0-100 mph: 9.8 seconds
      60-120 mph: 9.5 seconds
      60-130 mph: 12.0 seconds

      We'll hit the dyno tomorrow morning stock and then move onto the exhaust.

      Excelente news Arin.. mine is the pre-facelift RS5 but I hope it shares the same ECU and engine.

      I´m waiting to see what APR will create for it and start my upgrades...

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      07-31-2012 02:42 PM #4
      ridiculously excited to see what you guys do with this thing. supercharger?
      Last edited by srq89; 07-31-2012 at 02:45 PM.

    5. Forum Sponsor Arin@APR's Avatar
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      07-31-2012 05:27 PM #5
      Quote Originally Posted by srq89 View Post
      ridiculously excited to see what you guys do with this thing. supercharger?
      Yes sir!
      GoAPR.com | Facebook | YouTube | Twitter
      Phone: (800) 680-7921 Local Phone: +1 (334) 502-5181 Fax: +1 (334) 502-5180
      Address: APR LLC, 4800 US HWY 280 West, Opelika, AL 36801
      The bitterness of poor quality remains long after the sweetness of low price is forgotten.

    6. 08-01-2012 02:10 PM #6
      Quote Originally Posted by Arin@APR View Post
      We just took delivery of our latest development vehicle. Stay tuned for some very exciting and high horsepower updates!

      gorgeous car. Ibis or Suzuka?

    7. Forum Sponsor Arin@APR's Avatar
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      08-01-2012 05:34 PM #7
      Suzuka
      GoAPR.com | Facebook | YouTube | Twitter
      Phone: (800) 680-7921 Local Phone: +1 (334) 502-5181 Fax: +1 (334) 502-5180
      Address: APR LLC, 4800 US HWY 280 West, Opelika, AL 36801
      The bitterness of poor quality remains long after the sweetness of low price is forgotten.

    8. Forum Sponsor Arin@APR's Avatar
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      08-02-2012 06:00 PM #8
      Here's an update. We were very hopeful we'd have an exhaust system ready very quickly with only minor adjustments but it looks like a few design changes on the RS5 threw a wrench in those plans. We spent the week dyno and street acceleration testing the vehicle stock and moved onto the exhaust, but it's simply not going to be a 2 week project as we first anticipated.

      Sorry about that guys! We will looking into creating an RSC performance exhaust system for this vehicle but the lead time will be much greater than originally anticipated, so I want to set everyone's expectations accordingly.

      That said, I have some more data for you.

      We strapped the vehicle down to our all wheel drive dynapack dynamometer to collect some data. The first two runs were lower than the last 4 which looks to be due to some adaptation that took place while the vehicle was getting fully up to temp in all areas. It was up about 5 FT-LBS on average, so I discarded the first two lower stock runs and averaged the results of the final 4 runs.

      Here's what we were putting down to all 4, averaged over several runs, which were very consistent:




      Now, this is to the wheels, or hubs on our dyno, so there is drivetrain loss. Audi advertises numbers from the crank, which does not include this loss. Looking through the numbers I tried overlaying our graphs over Audi's dumbed down smooth marketing graphs to see how they stacked up. I then added torque increasingly across the entire RPM range till the numbers lined up very closely with Audi's numbers.

      Audi claims the following:

      450 hp @ 8250 RPM
      317 lb-ft. @ 4000 RPM

      By adding around 2-65 ft-lbs of torque across the RPM band from 2000 to 8400 RPMs, we get a crank graph that closely resembles Audi's advertised figures:



      Torque came out only slightly higher in some spots, but lower at the beginning of the dyno pulls which is not unheard of as every dyno type out there will read and load a little differently. At any rate this gets us very close to what they advertised so we'll try using this drivetrain loss calculation when analyzing other upgrades we make. We'll also reexamine the numbers after we get an RS5 on a few different dynos, including our MAHA crank calculating dyno in the APR UK facility.

      As we have more updates, I'll bump the thread with information.
      GoAPR.com | Facebook | YouTube | Twitter
      Phone: (800) 680-7921 Local Phone: +1 (334) 502-5181 Fax: +1 (334) 502-5180
      Address: APR LLC, 4800 US HWY 280 West, Opelika, AL 36801
      The bitterness of poor quality remains long after the sweetness of low price is forgotten.

    9. Junior Member
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      08-03-2012 08:45 PM #9
      In for pics of this next to the Suzuka TTRS you guys have (if it's still around) you know you want to!

    10. Member 04andahalf's Avatar
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      08-06-2012 03:18 PM #10
      My father is taking delivery of his RS5 tomorrow and loved what APR did to my GTI. He is extremely interested in anything you guys come out with! Please keep us posted!

    11. Member steaguejr's Avatar
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      08-15-2012 02:00 AM #11
      I want this car.

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