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JHM ECU Tuning or Tune for B8 S5 w/ 4.2L FSI V8 (32v)


Availability: In stock

Regular Price: $399.95

Sale Price $339.96

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Introducing JHM Tuning for the B8-S5 with the 32v 4.2l FSI V8!!!


IMPORTANT: After purchase you must email with your order number to receive your account credentials.


We have specialized in tuning naturally aspirated (NA) or "all motor" 4.2L V8 engines since we started tuning the B6-S4 in 2008. Ever since then we have been the number one company when it comes to Audi V8 performance. Like our success with the B6-B7 S4 and B7 RS4 has shown, our software has been proven time and time again to deliver real world performance. That continues with our tuning for the B8-S5 4.2L FSI V8. We purchased our in-house B8-S5 4.2L in mid-2013 and immediately began developing software. After countless revisions and putting the vehicle through our rigorous R&D process, we are happy to now offer the ultimate performance software for your B8-S5 4.2L FSI V8!


In true JHM fashion, here is some footage of our in-house, record setting B8-S5 running 12.6 seconds at 108 mph in the quarter mile!



Not only does our software perform, but it performs time and time again. Here are three back-to-back 12 second passes:



JHM Performance Software for the B8-S5 4.2L FSI V8 will completely change the dynamics of how your S5 performs. This is because we change hundreds of ECU parameters to extract as much power possible and doing so without removing OEM safety parameters. You will experience much more torque throughout the entire RPM range and notice how much more powerful the car is when coming out of shifts. Not to mention our famous Launch Assist feature will help you execute a consistent launch each and every time. Our software turns your car into something that the S5 should have been from the factory.




Our software alone will completely transform your S5. However, if you are looking to extract even more power, here are a coupe modifications we highly recommend!

 - JHM 2.5" Cat-Back Exhaust System: The 2.5" exhaust system that we offer for the B8-S5 will allow the exhaust to flow more efficiently with the calculated scavenging effect of our X-Pipe, allowing you to make more power.


Please go back one section to take a look at the product pages for the above recommended supporting modifications.




The LATE style Oil Level Sender is needed for model year 2008 S5s only. This is because our software updates you to a newer software version that was not made available to the 2008 vehicles. By not having the updated Oil Level Sender, your car will display an "Oil Over Filled" warning. This will not affect the car in any way and will only be an annoyance until the oil level sender is replaced with the late style. A good time to change the Oil Level Sender is while doing an oil change since removing the sender will cause you to lose some oil. We have both LATE Oil Level Senders and Oil Change Kits available in our store if you go back one section!


One of the benefits of having the LATE Oil Level Sensor is that you can reprogram your MMI to utilize the new sensor's ability to display your current oil level!


Check out our write-up on how to reprogram your MMI HERE --> MMI Oil Level Display for 2008 S5.




When you order please specify your year, body type, octane, and flashing method by using the dropdown boxes below.


- Transmission: In order to confirm that we have an ECU calibration for your specific box code, please select your S5's Transmission type (Manual or Automatic) from the dropdown below.
- Country: In order to confirm that we have an ECU calibration for your specific box code, please select your S5's region (USA - Canada or Rest of World) from the dropdown below.
- Year: In order to confirm that we have an ECU calibration for your specific box code, please select the year of your S5 (2008 - 2013) from the dropdown below.
- Octane: In order to make sure you get the correct ECU calibration, we need to know what octane fuel you use on a regular basis. Please select 91 octane or 93 octane from the dropdown below.
For Flashing Method, select "Flash Myself, SEPARATE 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.




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 S5 B8-B8.5 (2008-2017) 4.2l V8 32v FSI
Customer Reviews (3)
It's not going to blow your mind away, but it'll make you love the car more, for sure. It makes the car more responsive to throttle inputs, especially right after shifts. It definitely adds some power across basically the whole RPM range, but it feels extra aggressive over 3,000 RPM's. It's quieter at cruising speeds, but just as loud at WOT. I swear it also almost sounds deeper in pitch now, as well as having burble off-throttle for DAYS. I'd strongly recommend it to anyone looking to get the most out of their car. Review by Justin (Posted on 4/10/2020)
A Worthy Tune
I purchased a used 2009 S5 end of summer. It had the AWE track exhaust installed by previous owner. My birthday was Mid Nov and said I'd drive her like she was and get a tune for my birthday. I just got around to it, and she definitely runs different, and in all good ways! It might be the throttle response that is so much different that is the large majority of the difference, but she just seems to run netter overall. My friend described it best. It's like she got over her cold.

The only possible negative is why I mentioned the AWE exhaust. The exhuast isn't quite as growly, and it's much quieter when just cruising.

I have a stick and I have to relearn how to shift with this new tune the throttle reslonse is so much more sensitive.

I highly recommend this product. It is a bit of a different car with it installed.
Review by JCtyMark (Posted on 11/25/2017)
I drove a factory stock V8 S5 for 15,000 miles. Got very used to the car, how it felt, how fast it was, etc. Then I got the JHM Full Exhaust and tune. As they state on their product page, it totally transforms the car. It's more powerful, idles smoother, pulls more eagerly from low RPM, and absolutely ROCKETS forward from 3500RPM. Hard to believe it's still all motor when you hit that sweet spot. You'd swear a turbo has been strapped on but nope, that's JHM for you. Oh and did I mention the sound of the exhaust is absolutely to die for.

Next up is catless test pipes and clutch/flywheel. Can't wait to feel the difference of another round of JHM!
Review by Matt (Posted on 12/21/2015)
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You're reviewing: JHM ECU Tuning or Tune for B8 S5 w/ 4.2L FSI V8 (32v)
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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Q and A

Product Questions

I have Ross-Tech HEX-NET Professional WiFi & USB Interface would that work to install the tune?
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