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  1. #1
    Veteran Member Three Rings spense5's Avatar
    Join Date
    May 10 2018
    AZ Member #
    418537
    Location
    USA

    New Car Time - B8.5 v B9-9.5

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    Hey AZ, been awhile and need some community help.
    I have been out of my B8 S5 since Dec 2021. I am now interested in getting back into something fun. With my new position, I am fortunately able to WFH and not drive much. I'd estimate 4,000-6,000mi a year. I missed the tuning opportunity on my B8 4.2 S5 so I've been entertaining the idea of a B9+ model but boy do I miss that sound.
    I would likely only do a stg 1 ECU, stg2 TCU on the B9 or B9.5 but I'm under the impression the B9.5 isnt as tunable yet? My eye was on a 2019 anyway partly due to this handicap and also that the MY 2018s have rocker arm issues? Was I dreaming or did I read that this goes for all the B9's actually..

    I have an opportunity to acquire a low mileage B8.5 coupe with ceramics, nav, black optic, and exclusive paint option. The v8 sound was something I thoroughly enjoyed. The extra power in the RS5 checks that small itch I always wanted as well as the 8k+ tach. No tuning would be done here just suspension bits, wheels, and maybe some minor exterior bits.

    WWYD? I feel the value retention of the high rev v8 is the last of its kind and given the lower mileage I'd apply, would be a decent investment. I'd get the power bump and tech in the B9/B9.5... feeling torn. Warranty options too...

    * I cant find a white B9 with grey stitching, Black Optic, Dynamic, and under 40k miles (1 owner) ANYWHERE!

    Thanks!
    '12 S5 4.2L Prestige - Ibis, Black w/ Carbon Optic
    JHM Stg2 + TCU
    Custom Exhaust
    AWE S-Flo Carbon Intake
    Ohlins R&T Coilovers
    ST60 BBK w/ G-Loc Pads
    034 everything
    BC Forged 20x10 w/ MPSS 275/30


  2. #2
    Established Member Two Rings Code's Avatar
    Join Date
    Feb 01 2023
    AZ Member #
    876708
    Location
    So.Cal

    Cant say enough great things about my 2021 B9.5 RS5. It is very tunable, sexy looking, and fast. Some B9.5 models built for the 2024 model year are equipped with an ECU secured gateway preventing reflashing of any of the vehicle control modules, but anything prior to that should be good to go.
    ’21 RS5 Sportback | Speedcraft Garage on Youtube | Custom Audi Apparel

    Mods: 034Motorsport tune on E85 / Stg 2 TCU | 034Motorsport x34 full intake | Fuel-It Ethanol Sensor | Res delete | Billet Transmission Mount | TRC Splitter | APR wheel spacers| HPFP | 034 Turbo Inlet

  3. #3
    Veteran Member Three Rings spense5's Avatar
    Join Date
    May 10 2018
    AZ Member #
    418537
    Location
    USA

    Quote Originally Posted by Code View Post
    Cant say enough great things about my 2021 B9.5 RS5. It is very tunable, sexy looking, and fast. Some B9.5 models built for the 2024 model year are equipped with an ECU secured gateway preventing reflashing of any of the vehicle control modules, but anything prior to that should be good to go.
    Thanks! I havent been paying much attention until recent so it must've been the MY2024+ with the secured gateway. 034 for all the goodies though if I make the decision for the B9..
    '12 S5 4.2L Prestige - Ibis, Black w/ Carbon Optic
    JHM Stg2 + TCU
    Custom Exhaust
    AWE S-Flo Carbon Intake
    Ohlins R&T Coilovers
    ST60 BBK w/ G-Loc Pads
    034 everything
    BC Forged 20x10 w/ MPSS 275/30


  4. #4
    Senior Member Two Rings Z06Corey's Avatar
    Join Date
    May 24 2019
    AZ Member #
    486136
    Location
    CT

    The turbo 6 is way better than the V8. Do itttttt!
    2019 S5 SB. Prestige, black optics, B&O, sport diff. 034 stage 2/2 ECU/TCU, 034 downpipe, APR intercooler, 034 transmission insert, 034 turbo inlet, CTS intake
    2017 R8 V10+

  5. #5
    Veteran Member Four Rings Lensch09's Avatar
    Join Date
    Feb 20 2004
    AZ Member #
    738
    My Garage
    2022 B9 RS5 SB, 21 Rav4 Hybrid, some golf clubs
    Location
    Santa Clara, California

    B9.5 is indeed tunable dependent on year. If I remember correctly, the 22, 23 are tunable, not sure about the 24/25.



    -DL
    2022 RS5 Sportback - Navarra Blue

    Previously:
    2016 Audi S4 Prestige with tons of boltons -Build Thread - http://www.audizine.com/forum/showth...016-S4-Ordered!
    2007 Audi A4 S-line Ti APR GT2871R
    1999 Audi A4 Avant (S4 replica)
    2000 Audi S4 Sedan (Stage III)
    1999.5 Audi A4 1.8TQM Sport (bolt-ons)

  6. #6
    Veteran Member Three Rings spense5's Avatar
    Join Date
    May 10 2018
    AZ Member #
    418537
    Location
    USA

    Quote Originally Posted by Lensch09 View Post
    B9.5 is indeed tunable dependent on year. If I remember correctly, the 22, 23 are tunable, not sure about the 24/25.



    -DL
    good to know! just sucks because hardly anyone opts for grey stitching everytime I find a white one that catches my eye. or they are like 40k+ miles on '19-22 always the caveat when everything else checks the box and not in bay area anymore to take it to my guy to re-stitch or upholster everything PTS on some other cars.
    yeah this B8.5 RS5 averaged like 3k miles/yr, exclusive color, ceramics, black optic, dynamic, nav mmi+, etc... hard to pass up but I dont know much more more I would miss the sound vs the updated tech and tuning capabilities..

    No crazy overhaul on either:

    Ohlins again
    Ecodes
    Stg 1 ECU/Stg2 TCU
    Wheels+Tires
    Exterior carbon bits.
    '12 S5 4.2L Prestige - Ibis, Black w/ Carbon Optic
    JHM Stg2 + TCU
    Custom Exhaust
    AWE S-Flo Carbon Intake
    Ohlins R&T Coilovers
    ST60 BBK w/ G-Loc Pads
    034 everything
    BC Forged 20x10 w/ MPSS 275/30


  7. #7
    Established Member Two Rings
    Join Date
    Jul 18 2022
    AZ Member #
    761181
    Location
    NY

    23 ECU is tunable but, at least for S5, TCU is not yet. Will most likely come down the line but no way to be 100% certain.

  8. #8
    Established Member Two Rings
    Join Date
    Apr 23 2024
    AZ Member #
    984011
    Location
    Southeast, US

    Quote Originally Posted by spense5 View Post
    good to know! just sucks because hardly anyone opts for grey stitching everytime I find a white one that catches my eye. or they are like 40k+ miles on '19-22 always the caveat when everything else checks the box and not in bay area anymore to take it to my guy to re-stitch or upholster everything PTS on some other cars.
    yeah this B8.5 RS5 averaged like 3k miles/yr, exclusive color, ceramics, black optic, dynamic, nav mmi+, etc... hard to pass up but I dont know much more more I would miss the sound vs the updated tech and tuning capabilities..

    No crazy overhaul on either:

    Ohlins again
    Ecodes
    Stg 1 ECU/Stg2 TCU
    Wheels+Tires
    Exterior carbon bits.
    If you're not driving much, why is 40k miles a problem? Just take into account the water pump in the next 20k and factor it into your price. My B9 has 60k, tons of mods, and I've only had to do the WP. I'm anticipating taking this car to 100k
    2019 RS5 Sportback - 034 Stage 2 ECU/TCU

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