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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. Anyone running JHM ECU/TCU?

    Started by BarryDJr, 11-18-2024 06:44 AM
    • Replies: 26
    • Views: 2,294
    ericw.
    Yesterday, 09:12 AM Go to last post

  2. [Warning] My $7K Tuning Experience with Kyle – Stage3 + Meth Kit Gone Wrong

    Started by scotteumach, 05-15-2025 07:19 PM
    • Replies: 3
    • Views: 483
    Audibellybutton
    Yesterday, 02:15 AM Go to last post

  3. Consistently been pulling DTC P227000 - how do I start diagnosing?

    Started by sp2310, 05-16-2025 12:16 AM
    • Replies: 0
    • Views: 171
    sp2310
    05-16-2025, 12:16 AM Go to last post

  4. Rear sway bar upgrade

    Started by Maimonea77, 05-05-2025 05:05 PM
    • Replies: 9
    • Views: 563
    ericw.
    05-15-2025, 08:54 AM Go to last post

  5. Anyone attempted oxygen sensor replacements?

    Started by joe_momma, 05-09-2025 07:18 AM
    • Replies: 5
    • Views: 420
    joe_momma
    05-13-2025, 03:03 PM Go to last post

  6. 4.0t replace/update

    Started by PaS6, 04-21-2025 10:32 PM
    • Replies: 15
    • Views: 1,044
    PaS6
    05-10-2025, 08:08 AM Go to last post

  7. ⛽ 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: 34
    • Views: 6,399
    Jake@JHM
    05-08-2025, 09:12 AM Go to last post

  8. How long does pcv breather valve last?

    Started by flyfishing, 05-05-2025 01:21 PM
    • Replies: 1
    • Views: 230
    Audibellybutton
    05-06-2025, 11:00 PM Go to last post

  9. TS1 turbos

    Started by OhioS6, 02-25-2023 10:22 PM
    2 Pages •
    1 2
    2 Attachment(s)
    • Replies: 46
    • Views: 12,616
    Audibellybutton
    05-06-2025, 05:42 PM Go to last post

  10. Simultaneous coolant temp and oil temp faults

    Started by Orch, 04-26-2025 12:10 PM
    • Replies: 2
    • Views: 302
    Orch
    05-06-2025, 07:49 AM Go to last post

  11. New product: Pierburg CWA-150

    Started by Dasquade, 01-13-2021 09:17 AM
    9 Attachment(s)
    • Replies: 22
    • Views: 16,225
    Botbasher
    05-05-2025, 10:42 AM Go to last post

  12. Vacuum Pump Testing / Intake Manifold Flaps

    Started by nels2825, 06-27-2021 08:34 AM
    1 Attachment(s)
    • Replies: 6
    • Views: 933
    Audibellybutton
    05-04-2025, 04:33 PM Go to last post

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

    Started by Audibellybutton, 01-01-2025 08:50 PM
    2 Pages •
    1 2
    al551, zf swap, zf8 2 Attachment(s)
    • Replies: 40
    • Views: 6,097
    Audibellybutton
    05-02-2025, 09:08 PM Go to last post

  14. Fuelling on the C7.5 S6

    Started by Manaz, 04-25-2025 11:06 PM
    1 Attachment(s)
    • Replies: 6
    • Views: 529
    srb_brah
    05-01-2025, 08:28 AM Go to last post

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

    Started by EriCal, 04-22-2025 02:26 PM
    • Replies: 1
    • Views: 318
    Botbasher
    04-30-2025, 07:14 AM Go to last post

  16. DSG Rebuilt Mechatronic Units

    Started by Blackcoog, 04-23-2025 09:19 AM
    • Replies: 1
    • Views: 352
    Botbasher
    04-30-2025, 05:47 AM Go to last post

  17. Transmission Fluid Cooler Control Fault code p2755 For S6

    Started by Euconect, 04-28-2025 07:35 AM
    • Replies: 0
    • Views: 243
    Euconect
    04-28-2025, 07:35 AM Go to last post

  18. Post Heat Exchanger Info

    Started by 335LOL, 04-17-2025 11:34 AM
    heat exchanger, iat
    • Replies: 6
    • Views: 580
    Burkeomatic
    04-18-2025, 07:06 PM Go to last post

  19. What is this noise?

    Started by John336, 01-15-2022 03:28 PM
    • Replies: 26
    • Views: 5,980
    John336
    04-15-2025, 06:15 PM Go to last post

  20. HPFP Parts Question

    Started by sloth8871, 04-10-2025 09:21 AM
    • Replies: 11
    • Views: 633
    Burkeomatic
    04-15-2025, 02:33 PM Go to last post

  21. CWUC turbocharger impeller dimensions

    Started by Sla, 03-28-2025 10:07 AM
    2 Attachment(s)
    • Replies: 14
    • Views: 982
    Sla
    04-04-2025, 11:24 AM Go to last post

  22. SRM rs7 turbos and strainer removal

    Started by Boostedawd91, 03-18-2025 07:20 PM
    • Replies: 11
    • Views: 1,087
    Botbasher
    04-03-2025, 07:08 PM Go to last post

  23. Intermittent coolant leak

    Started by fall-apart-dave, 03-27-2025 12:56 AM
    • Replies: 5
    • Views: 626
    Burkeomatic
    04-03-2025, 06:04 PM Go to last post

  24. 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: 6,134
    SpongeM
    04-03-2025, 01:43 PM Go to last post

  25. Downpipe

    Started by Maimonea77, 03-22-2025 09:38 PM
    • Replies: 4
    • Views: 732
    Botbasher
    04-03-2025, 05:19 AM Go to last post

  26. Anyone with Jackal tune on S6?

    Started by BarryDJr, 11-23-2024 02:39 AM
    • Replies: 24
    • Views: 3,426
    Burkeomatic
    04-02-2025, 08:36 PM Go to last post

  27. buying 2016 rs7

    Started by eliseo.z, 03-29-2025 10:23 PM
    • Replies: 1
    • Views: 509
    danmm7
    04-02-2025, 03:48 PM Go to last post

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

    Started by vtraudt, 03-20-2025 03:51 PM
    • Replies: 6
    • Views: 677
    vtraudt
    04-02-2025, 05:54 AM Go to last post

  29. Help overheating no coolant loss

    Started by DPs8, 09-25-2022 07:52 AM
    1 Attachment(s)
    • Replies: 32
    • Views: 12,520
    vtraudt
    03-23-2025, 04:06 PM Go to last post

  30. Aftermarket OEM Engine Mounts

    Started by Blackcoog, 05-22-2024 05:38 AM
    3 Pages •
    1 2 3
    2 Attachment(s)
    • Replies: 83
    • Views: 8,854
    joeyjazesmith
    03-18-2025, 05:08 PM Go to last post

  31. Audi S7 Strange noise

    Started by Emre69, 08-24-2019 03:23 AM
    • Replies: 32
    • Views: 18,981
    jh_s6
    03-17-2025, 08:26 PM Go to last post

  32. Looking for any 4.0T DS1 XDF's

    Started by QuattroNaut, 02-23-2025 10:55 PM
    ds1
    • Replies: 1
    • Views: 704
    16AudiS8+
    03-17-2025, 04:42 PM Go to last post

  33. Unhappy S7 2016 cylinder 8 misfires

    Started by John336, 03-08-2025 07:28 PM
    misfire
    • Replies: 4
    • Views: 727
    John336
    03-14-2025, 02:15 PM Go to last post

  34. Pulley ONLY replacement options??

    Started by Botbasher, 03-10-2025 01:49 PM
    • Replies: 0
    • Views: 387
    Botbasher
    03-10-2025, 01:49 PM Go to last post

  35. Oil filter bypass valve?

    Started by toddm889, 03-08-2025 05:53 AM
    • Replies: 1
    • Views: 388
    toddm889
    03-08-2025, 06:05 AM Go to last post

  36. JHM Tune

    Started by quattroism25, 04-01-2023 09:22 PM
    3 Pages •
    1 2 3
    • Replies: 84
    • Views: 23,880
    BuyTheWarranty
    03-06-2025, 06:02 PM Go to last post

  37. Meth/water injections

    Started by 09S5, 06-17-2024 07:58 AM
    7 Attachment(s)
    • Replies: 27
    • Views: 3,165
    Botbasher
    03-05-2025, 06:45 AM Go to last post

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

    Started by Josh_b8.5, 03-04-2025 04:41 PM
    • Replies: 0
    • Views: 506
    Josh_b8.5
    03-04-2025, 04:41 PM Go to last post

  39. 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: 117,082
    Avantly
    03-03-2025, 12:58 PM Go to last post

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

    Started by gogo_!, 02-11-2025 02:59 AM
    • Replies: 1
    • Views: 519
    Audibellybutton
    02-18-2025, 02:07 AM Go to last post

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