SRN has invested in Autologic Diagnostic Equipment to enable us to keep up-to-date with the latest technology.

Autologic for BMW offers:

• Coding of body control modules
• Programming of engine control modules
• Programming of key and car memory
• Clearing and re-setting of adaptation values
• Real-time reading of all dynamic data
• Procedure for the fitting of BMW accessories
• Reading and re-setting of fault codes

BMW, & Mini Performance Tuning

Using diagnostic equipment from Autologic we are able to performance tune many BMW & Mini models.

Autologic Performance Tunes are modifications to the manufacturer’s vehicle tune data. These modifications are downloaded to the vehicle’s Engine Control Module (ECM) from Autologic through the OnBoard Diagnostic connector.


• Increased power and torque
• Smoother delivery of power
• Increased fuel economy in most diesel applications
• Sharper Throttle Response
• Faster acceleration
• Reduced number of gear changes
• All upgrades are through the diagnostic connector, meaning that the ECM does not have to be removed and opened up.

Performance Tuning

Diagnos has developed tunes for all of the control units listed above. There are however hundreds of variations for each control unit and vehicle. It is necessary therefore, for us to diagnose the vehicle with Autologic and determine whether or not a performance tune exists for the current level of ECU software
Diagnos are required to develop a Performance Tune for this variation If a tune does not exist, we will be required to send specific data about the control unit to diagnos. New Performance Tunes can normally be written usually within 24 hours.

Frequently Asked Questions

Q. Why do the manufacturers limit the power output of their engines?

A. The standard manufacturer tune is a compromise of hundreds of factors. Principally, the manufacturer must ensure a high degree of engine reliability across the worldwide market taking into account factors such as;
• Fuel Quality
• Different servicing schedules
• Different operating environments, such as altitude and terrain
• Local legislation with regard to power output and emissions
• During testing, manufacturers “tweak” the tunes constantly to achieve individual results for individual tests, thus comprising the overall smoothness of the original tune.

Autologic Performance Tunes are optimized for European and US driving conditions. As long as the manufacturer’s service schedule is adhered to, there is no reason why this extra power cannot be “unlocked”.

Q. How will the emissions be affected?

A. All Autologic Performance Tunes are tested to ensure that they comply with UK emissions laws.

Q. Is the tuning process reversible?
A. Yes. In the unlikely event that you require the Autologic Performance Tune to be removed, the process can be reversed without any side effects.

Q. Are there any physical changes to vehicle?
A. Not usually. Most Autologic Performance Tunes are ECM software downloads only. There will be no physical evidence that the engine has been uprated. The exception to this statement is the BMW Mini Cooper S. We have two different tunes available. The first is diagnostic only, the second has been optimized for a smaller supercharger pulley.

Q. Are there performance figures for all Performance Tunes?

A. NO. It is impractical to produce graphs for all engine variations. There are simply thousands of variations in tunes. The power output of an engine will depend on age, oil condition, temperature, air pressure. The graphs that we provide are a sample of the complete range that we cover. They should be read as a proportional comparison between the pre-tune graph and the post-tune graph.

Q. Are there any insurance implications?

A. YES. Most insurance companies require you to notify them of any modifications to your vehicle. This includes modifications such as stainless steel exhausts or different alloy wheels. Some insurance companies will add a premium to your policy, others will not.

How much does this service cost at SRN?
If you would like some info on pricing please click here and fill in our enquiry form for a quote.