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Forum: V8 4.0TT Specific

Discussion Forum relating specifically to the 4.0L twin-turbo V8 powered C7 S6, S7, RS 6 and RS 7.

  1. 4.0t replace/update

    Started by PaS6, 04-21-2025 10:32 PM
    • Replies: 9
    • Views: 507
    Audibellybutton
    Today, 01:43 PM Go to last post

  2. Cooling system and brake drain and refill. 2016 S7

    Started by EriCal, 04-22-2025 02:26 PM
    • Replies: 1
    • Views: 197
    Botbasher
    Today, 07:14 AM Go to last post

  3. Fuelling on the C7.5 S6

    Started by Manaz, 04-25-2025 11:06 PM
    • Replies: 3
    • Views: 267
    Botbasher
    Today, 07:09 AM Go to last post

  4. Simultaneous coolant temp and oil temp faults

    Started by Orch, 04-26-2025 12:10 PM
    • Replies: 1
    • Views: 148
    Botbasher
    Today, 07:01 AM Go to last post

  5. DSG Rebuilt Mechatronic Units

    Started by Blackcoog, 04-23-2025 09:19 AM
    • Replies: 1
    • Views: 205
    Botbasher
    Today, 05:47 AM Go to last post

  6. ⛽ New Product: JHM Braided Kevlar Fuel Line Re-Route Kit for the 4.0t ⛽

    Started by Tech/Sales@JHM, 02-22-2024 10:49 AM
    • Replies: 28
    • Views: 5,980
    Jake@JHM
    Yesterday, 07:37 AM Go to last post

  7. Transmission Fluid Cooler Control Fault code p2755 For S6

    Started by Euconect, 04-28-2025 07:35 AM
    • Replies: 0
    • Views: 125
    Euconect
    04-28-2025, 07:35 AM Go to last post

  8. C7 S6/S7 DL501 to ZF8 HP55 Swap Guide

    Started by Audibellybutton, 01-01-2025 08:50 PM
    al551, zf swap, zf8 2 Attachment(s)
    • Replies: 39
    • Views: 4,913
    Audibellybutton
    04-23-2025, 01:28 PM Go to last post

  9. Post Heat Exchanger Info

    Started by 335LOL, 04-17-2025 11:34 AM
    heat exchanger, iat
    • Replies: 6
    • Views: 417
    Burkeomatic
    04-18-2025, 07:06 PM Go to last post

  10. What is this noise?

    Started by John336, 01-15-2022 03:28 PM
    • Replies: 26
    • Views: 5,802
    John336
    04-15-2025, 06:15 PM Go to last post

  11. HPFP Parts Question

    Started by sloth8871, 04-10-2025 09:21 AM
    • Replies: 11
    • Views: 486
    Burkeomatic
    04-15-2025, 02:33 PM Go to last post

  12. CWUC turbocharger impeller dimensions

    Started by Sla, 03-28-2025 10:07 AM
    2 Attachment(s)
    • Replies: 14
    • Views: 876
    Sla
    04-04-2025, 11:24 AM Go to last post

  13. SRM rs7 turbos and strainer removal

    Started by Boostedawd91, 03-18-2025 07:20 PM
    • Replies: 11
    • Views: 921
    Botbasher
    04-03-2025, 07:08 PM Go to last post

  14. Intermittent coolant leak

    Started by fall-apart-dave, 03-27-2025 12:56 AM
    • Replies: 5
    • Views: 543
    Burkeomatic
    04-03-2025, 06:04 PM Go to last post

  15. Audi S6 C7 Stage 2+/ 3 Result Opinion

    Started by Vanko0o1, 07-15-2023 04:49 AM
    question, s6 stage3, tuning 2 Attachment(s)
    • Replies: 16
    • Views: 5,859
    SpongeM
    04-03-2025, 01:43 PM Go to last post

  16. Downpipe

    Started by Maimonea77, 03-22-2025 09:38 PM
    • Replies: 4
    • Views: 614
    Botbasher
    04-03-2025, 05:19 AM Go to last post

  17. Anyone with Jackal tune on S6?

    Started by BarryDJr, 11-23-2024 02:39 AM
    • Replies: 24
    • Views: 2,978
    Burkeomatic
    04-02-2025, 08:36 PM Go to last post

  18. buying 2016 rs7

    Started by eliseo.z, 03-29-2025 10:23 PM
    • Replies: 1
    • Views: 406
    danmm7
    04-02-2025, 03:48 PM Go to last post

  19. What can cause 'no heat', 'cold radiator' and 'overheating"?

    Started by vtraudt, 03-20-2025 03:51 PM
    • Replies: 6
    • Views: 608
    vtraudt
    04-02-2025, 05:54 AM Go to last post

  20. Help overheating no coolant loss

    Started by DPs8, 09-25-2022 07:52 AM
    1 Attachment(s)
    • Replies: 32
    • Views: 12,241
    vtraudt
    03-23-2025, 04:06 PM Go to last post

  21. Aftermarket OEM Engine Mounts

    Started by Blackcoog, 05-22-2024 05:38 AM
    3 Pages •
    1 2 3
    2 Attachment(s)
    • Replies: 83
    • Views: 8,529
    joeyjazesmith
    03-18-2025, 05:08 PM Go to last post

  22. Audi S7 Strange noise

    Started by Emre69, 08-24-2019 03:23 AM
    • Replies: 32
    • Views: 18,805
    jh_s6
    03-17-2025, 08:26 PM Go to last post

  23. Looking for any 4.0T DS1 XDF's

    Started by QuattroNaut, 02-23-2025 10:55 PM
    ds1
    • Replies: 1
    • Views: 584
    16AudiS8+
    03-17-2025, 04:42 PM Go to last post

  24. Unhappy S7 2016 cylinder 8 misfires

    Started by John336, 03-08-2025 07:28 PM
    misfire
    • Replies: 4
    • Views: 599
    John336
    03-14-2025, 02:15 PM Go to last post

  25. Pulley ONLY replacement options??

    Started by Botbasher, 03-10-2025 01:49 PM
    • Replies: 0
    • Views: 335
    Botbasher
    03-10-2025, 01:49 PM Go to last post

  26. Oil filter bypass valve?

    Started by toddm889, 03-08-2025 05:53 AM
    • Replies: 1
    • Views: 332
    toddm889
    03-08-2025, 06:05 AM Go to last post

  27. JHM Tune

    Started by quattroism25, 04-01-2023 09:22 PM
    3 Pages •
    1 2 3
    • Replies: 84
    • Views: 23,404
    BuyTheWarranty
    03-06-2025, 06:02 PM Go to last post

  28. Meth/water injections

    Started by 09S5, 06-17-2024 07:58 AM
    7 Attachment(s)
    • Replies: 27
    • Views: 2,959
    Botbasher
    03-05-2025, 06:45 AM Go to last post

  29. Oil leaks from top end, dealer quoted total valley reseal

    Started by Josh_b8.5, 03-04-2025 04:41 PM
    • Replies: 0
    • Views: 425
    Josh_b8.5
    03-04-2025, 04:41 PM Go to last post

  30. TS1 turbos

    Started by OhioS6, 02-25-2023 10:22 PM
    2 Pages •
    1 2
    2 Attachment(s)
    • Replies: 44
    • Views: 11,983
    Botbasher
    03-04-2025, 01:48 PM Go to last post

  31. Intermittent hard or no start on 4.0T S6 S7 RS7- possibly solved

    Started by Hofahome, 11-05-2018 06:57 PM
    6 Pages •
    1 2 3 4 5 ... 6
    6 Attachment(s)
    • Replies: 205
    • Views: 115,378
    Avantly
    03-03-2025, 12:58 PM Go to last post

  32. Question P1398 - Engine Speed Signal - Short to Ground

    Started by gogo_!, 02-11-2025 02:59 AM
    • Replies: 1
    • Views: 415
    Audibellybutton
    02-18-2025, 02:07 AM Go to last post

  33. Question about DS1 emissions monitors

    Started by Devman2013S7, 02-10-2025 01:06 PM
    • Replies: 1
    • Views: 574
    Burkeomatic
    02-13-2025, 12:54 PM Go to last post

  34. APR Oktunerfest Software Sale!

    Started by Arin@APR, 09-15-2023 07:01 AM
    • Replies: 7
    • Views: 1,928
    icemen36
    02-05-2025, 11:18 AM Go to last post

  35. Unique spec on this RS6 Avant C7.5 - VIDEO

    Started by Auditography, 01-25-2025 06:24 AM
    • Replies: 1
    • Views: 671
    ElementR
    02-02-2025, 07:22 AM Go to last post

  36. S6 exhaust options? Too loud currently

    Started by benznotmercedes, 12-03-2024 06:58 AM
    • Replies: 11
    • Views: 1,676
    benznotmercedes
    01-22-2025, 10:30 AM Go to last post

  37. Thumbs up NOW AVAILABLE: JHM 4.0T RKM Lined Silicone Turbocharger Oil drain Hoses

    Started by Jake@JHM, 01-21-2025 02:25 PM
    • Replies: 0
    • Views: 801
    Jake@JHM
    01-21-2025, 02:25 PM Go to last post

  38. Farewell and Q about DS1

    Started by himself, 01-19-2025 05:30 AM
    1 Attachment(s)
    • Replies: 2
    • Views: 783
    MattyMarkey
    01-21-2025, 09:07 AM Go to last post

  39. 2017 S6 P0118 coolant temp sensor running high - where is it and can I replace it?

    Started by axon, 01-19-2025 06:08 PM
    • Replies: 1
    • Views: 557
    Botbasher
    01-20-2025, 05:33 AM Go to last post

  40. O2 sensor replacement, passenger side

    Started by Devman2013S7, 01-07-2025 10:58 AM
    • Replies: 7
    • Views: 889
    Devman2013S7
    01-19-2025, 02:00 PM Go to last post

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