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JHM ECU and TCU (Stage 3 RS) Tuning Bundle for C7 S6-S7, D4 A8 4.0t with RS7 or RS7-R Turbo


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JH Motorsports is proud to release our JHM C7 S6-S7 and D4-A8 4.0T - RS7 or RS7-R Turbo  ECU and TCU Software!


Experience the ultimate in performance with our Stage 3 RS and RS+ performance ECU and TCU software designed to maximize the engine power output of your vehicle equipped with RS7 or RS7-R turbos. Developed and refined by our engineering team over years of daily driving and abuse, our software takes the guesswork out of tuning and provides the most comprehensive and effective solution available.

With our one-and-done solution, all you need is one flashing cable and an internet connection to flash your ECU and TCU with our optimized software. Our transmission tune is specially optimized with a launch control that eliminates massive tire spin and provides consistent launches on street tires and RS7 turbos. You can easily adjust the launch RPM based on your tires, traction, and driving conditions, all backed by our extensive testing and hundreds of test passes performed.

By making an ECU and TCU combination that works together, we were able to deliver unmatched performance for your C7 S6-S7 and D4-A8 4.0T. Our software features an increased engine rev limit of up to 7200 RPM, more aggressive throttle control, increased shifting speeds, and faster clutch clamping with higher clamp loads. You'll also enjoy more assertive shifting in Sport mode and after launching, as well as a variable launch RPM that delivers a more aggressive and consistent launch.

Our software is also designed to refine drive and normal driving shifting dynamics, decrease transmission wear by reducing slipping from faster shifting, raise TQ limiters, and provide a more aggressive torque curve. Plus, you'll enjoy maximum boost for each gear with faster spool, safe EGT management for stock catalyst protection, and a larger range of fuel and ignition adaptation for more power from better fuel. Finally, our ESP/traction control is adjusted to eliminate micro braking due to tire spin, helping to prevent axle breakage when launching.

Upgrade to Stage 3 enjoy the ultimate in power and performance with our Stage 3 RS and RS+ performance ECU and TCU software. Get yours today and experience the difference for yourself!


By making an ECU and TCU combination that works together we were able to do the following for your C7 S6-S7 and D4-A8 4.0T 

  • Engine Rev limit increased to 7200 rpm
  • More aggressive throttle control
  • Increased shifting speeds
  • Faster Clutch Clamping with Higher Clamp Loads
  • More assertive shifting in Sport mode and after launching
  • Variable Launch RPM - 3000 rpm recommended for Stage 3
  • More aggressive and consistent Launch
  • Refined Drive and normal driving shifting dynamics
  • Decreased Transmission wear due to less slipping from faster shifting
  • Raised TQ limiters
  • More Agressive Torque Curve
  • Maximum Boost for each gear with faster spool
  • Safe EGT Management for Stock Catalyst Protection keeping your car as safe as possible while maximizing performance - Stage 1
  • Larger Range of Fuel Adaptation for More Power from Better Fuel
  • Larger Range of Ignition Adaption 
  • ESP / traction control adjusted to eliminate micro braking due to tire spin (Helps prevent axle breakage when launching)



• Stage 3-  w RS7 or RS7-R Turbos and Downpipes 

• Stage 3 w RS7 or RS7-R Turbos,  Downpipes, and with RS7 Controller (91 or 93 octane only) - Larger pump / controller setup needed for E40 and beyond

• Stage 3+ w RS7 or RS7-R Turbos,  Downpipes, and with Aftermarket wastegates - Larger LPFP and controller setup (max effort builds)




Available Fuel Options:

• 91 Octane

• 93 Octane

• 100+ Octane

• E40

• E85 (you must contact us to confirm you have the supporting fuel system mods)



RS7-R Performance Examples on an RS7:


 MODS: JHM RS7-R Turbos, Downpipes and Stock Catback, 91 Octane Fuel - Full Weight



MODS: HM RS7-R Turbos, Downpipes and Stock Catback, 93 Octane Fuel - Full Weight



For Flashing Method, select "Flash Myself, SEPARATE POWER CONNECT Cable Purchase Required, CLICK LINK BELOW" if you're going to be buying a cable from us and flashing your car on your own. You'll need to add this option.


and add to your cart after adding the tune, just selecting the option is NOT enough. Make sure you have THOROUGHLY read through the instructions and are confident that you can set your computer up correctly. If you select this option for your tune, you must select a shipping method for your order so we can ship you a JHM Tuning-Flashing Cable. Please select a shipping method once you've added the tuning and the flashing cable to your cart. Instructions for installing the flashing software on your computer will be emailed to you after purchase.


If you already have a JHM POWER CONNECT Cable, select "I already have a JHM POWER CONNECT Cable." **NOTE: This is a proprietary cable with drivers specific to our Flashing Software so you must make sure that you have a JHM POWER CONNECT Cable, NOT just a generic USB Vag Com cable.** After receiving your paid order, we will send you an authorization form which we will use to create your JHM Tuning Flash Browser account and login information. This is the information you will use to access our server and flash your car with the JHM Tuning-Flashing Cable that you already have.


DISCLAIMER: JHM is now using proven flashing technology in order to get our tunes on our customers' cars in the quickest and most convenient way possible. You will be installing a proprietary JHM software that works ONLY with our flash cable (supplemental software such as Microsoft .net may be required). This program is what allows you to detect your ECU part number, fill in your information, select the correct program based on your hardware and then write JHM Tune to your ECU all through your OBD II port. Both of these programs are highly specific when it comes to configuring your computer to run them properly. While every effort has been made to clearly and completely explain this configuration in our instructions, the customer will ultimately be responsible for removing or disabling their own or third party anti-virus software or firewalls that will block the port required for you to log into our flashing server (see the link to our instructions below to determine whether or not this is something you'll be able to do). Basic technical support provided by JHM to help install these programs on your computer, diagnose programs with your computer, and/or internet connection may be subject to an hourly fee. Additionally, if something happens to your ECU during the flashing process, you should be able to restore it using our software. If you are still unable to make the ECU flash properly, you will be responsible for all costs associated with restoring your ECU and fixing the issue.


Requirements for Tune: 
- Windows computer with at least 1 USB (Universal Serial Bus) port 
- Wired Broadband Internet Connection (wireless can be unreliable) 
- JHM Tuning-Flashing Cable (Flash cable length cannot extend beyond 10 ft long unless a powered USB hub is installed in-line. 
- Battery Charger or equivalent power source capable of sustaining a 40 amp charge


You can download and view the instructions HERE to determine whether or not this is something you would like to do.


If you would like to get tuned at our location in Lathrop, CA please give us a call to schedule an appointment! If you'd like to get tuned at a JHM dealer close to your location, you can find one using our Dealer Map by clicking the "Dealers" Tab at the top of this page. You will need to contact your preferred dealer directly and schedule a tuning appointment with them. You shouldn't be charged more than an hours' worth of labor for your JHM Flash.


Our dealer network is large and growing daily. If we do not have a dealer within an hour drive of your location, we will do everything possible to build a new relationship with a shop close to you on your behalf. Please contact us for more information.


For shipping quotes: Please sign in or join then put the items you want in your shopping cart and proceed to checkout. If you are looking to purchase other products at the same time as your tune, please do so on a separate invoice.




This product fits the following vehicles:
Make Model Chassis Engine
Audi S6 C7-C7.5 (2013-Present) 4.0t V8 32v
Audi S7 C7-C7.5 (2013-Present) 4.0t V8 32v
Audi A8 D4-D4.5 (2011-Present) 4.0t V8 32v
Customer Reviews (2)
props to JHM
Just wanted to say props to JHM for a great bit of kit. I got my S6 in january and 3 weeks in decided to do the oil filter relocation kit and pvc. Used JHM's, which turned out to be pretty nice. During the install, the turbos were noticeably going, so i decided to go full speed ahead and upgrade while everything was apart.

I ended up adding the RS7R turbo upgrades, ECU / TCU stage 3 tune, and a heat exchanger. I also picked up a downpipe, but I think there was some miscommunication and don't think i'll be able to use it. Overall, the tune is terrific. It's a noticeable step up in performance. My goodness does the exhaust sound terrific now in S mode. I don't have a point of comparison with other audi tunes, but my weekend car is a ~870 bhp R33 GTR. While completely different uses and driving styles, i've found myself really enjoying the S6 to the point that i've been jumping in it instead of the GTR for quick trips.
Review by Barong02 (Posted on 4/5/2023)
Car runs better than on any other tune
run JHM's ECU+TCU 91 octane tune. Car runs better than on any other tune and when I push it, I've beaten all the other 91 octane files.

I've run APR, EPL, and my buddy has DS1's 91 octane OTS tune.
I'm almost a full second faster in the quarter mile over DS1's equivalent file.
I'm a few tenths faster than I was on APR.
EPL is a joke so not even worth talking about.
The best 0-60 I've achieved on 91 octane was with the JHM ECU+TCU tune.
Review by ericw. (Posted on 4/5/2023)
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You're reviewing: JHM ECU and TCU (Stage 3 RS) Tuning Bundle for C7 S6-S7, D4 A8 4.0t with RS7 or RS7-R Turbo
Off-road Use

By Purchasing any Off-Road use ONLY products from JH Motorsports, Inc. I acknowledge and understand the following disclosure. (This notice is located at the bottom of the page description of affected products on our website.)

Vehicle Code § 27156:
(b) No person shall operate or leave standing upon a highway a motor vehicle that is required to be equipped with a motor vehicle pollution control device under Part 5 (commencing with Section 43000) of Division 26 of the Health and Safety Code or any other certified motor vehicle pollution control device required by any other state law or any rule or regulation adopted pursuant to that law, or required to be equipped with a motor vehicle pollution control device pursuant to the National Emission Standards Act (42 U.S.C. Secs. 7521 to 7550, inclusive) and the standards and regulations adopted pursuant to that federal act, unless the motor vehicle is equipped with the required motor vehicle pollution control device that is correctly installed and in operating condition. No person shall disconnect, modify, or alter any such required device.
(c) No person shall install, sell, offer for sale, or advertise any device, apparatus, or mechanism intended for use with, or as a part of, a required motor vehicle pollution control device or system that alters or modifies the original design or performance of the motor vehicle pollution control device or system.

Health and Safety Code § 43000:
43001. The provisions of this part shall not apply to:
(a) Racing vehicles.

As the aforementioned code sections outline, it is against the law to operate or use a vehicle on public streets or highways with modified, altered, or disconnected motor vehicle pollution control devices. This may include but is not limited to, Evaporative Fuel Controls, Catalysts, DPF, PTOX, PCV Systems, Exhaust Gas Recirculation Systems, Oxygen Sensors, Thermostatic Air Cleaners, Air Intake Systems, Fuel Injectors, Regulators, Adjustable Cam Gears, ECU Programming, Mapping, or other Computer Modifications. Air Pumps, Air Injection, Timing, and any other Emission System Modification(s).

Purchaser acknowledges and certifies to JH Motorsports Inc., that Purchasers vehicle will only be used for racing applications or off road vehicle use only. Purchaser requests these modifications for the purpose of enhancing the vehicle for competitive Racing Applications and will not use this vehicle on public streets or highways. Purchaser agrees to indemnify JH Motorsports Inc., all employees, officers, owners, and subsidiaries for any civil or criminal liability arising out of use of Purchasers vehicle on public streets or highways as Purchaser has been duly notified of the laws and regulations regarding disconnecting, alteration, or modification of a vehicle’s pollution control devices. Purchaser understands and has been advised the driving of a vehicle on public streets or highways could result in criminal or civil penalties.

Prop 65

Warning: This product may contain a chemical known to the State of California to cause cancer, birth defects, or other reproductive harm.

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