JHM ECU Tuning or Tune for B8 S5 w/ 4.2L FSI V8 (32v) | JHM-B8S5V8TU

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

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! 

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.

RECOMMENDED SUPPORTING MODIFICATIONS

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.

NOTE FOR MODEL YEAR 2008

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.

OPTIONS

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.

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

⚠️CALIFORNIA WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

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