FAQ - Frequently Asked Questions



Why choose TUNERWERKS?

We do understand there are a number of tuning providers to choose from, and from a web site many look the same. We would seek to assure you TUNERWERKS is not just "another tuning provider": our tuning services have been developed in house over the last 20 years and are some of the very best available in the world today. Award winning tuning services, TUNERWERKS is the one of the only ISO certified tuning and training provider, we are approved and used by the largest fleet and industry professionals across the world. All tuning is insured and comes with our money back promise. If your tuner can't demonstrate how they develop and test their tuning and that they conduct dyno and emissions testing (a legal requirement) - don't you just wonder how they do it? TUNERWERKS tuning and ECU remapping is dyno developed, and emission tested. TUNERWERKS are the responsible tuning company, all our TUNERWERKS tuning is custom developed with years of research and development, and TUNERWERKS gives you the choice of the level of tune you want. Be it performance or economy tuning, we have the ability to reach your exact requirements. If you can't decide between a multitudes of options, then fear not, as we also have an option that allows you to have multiple maps available for your car at the press of a button.


Why have I not heard of TUNERWERKS?

TUNERWERKS has been tuning cars since 1995. For motorsport teams around the world and was not available to the retail public. From there we opened up our ECU tuning services and were contracted out by some of the more popular European tuner.


So why don't manufactures tune their vehicles?

The most common of all tuning questions, it is not complicated, but there are a few answers to this question, some more obvious than others. Vehicle manufactures are in a tough position here, they have to build one vehicle for all drivers, it's a bit like a nice suit off the shelf, it fits well, its looks smart, but it can't be custom tailored for the end customer, tuning is just the same, if you own a fleet of vans you may want a speed limiter or rev limiter added to help save your fuel, yet another customer may want a little more power to help with towing, or heavy payloads, these sort of changes can only be made once the vehicle is built and the customer needs something other than off the shelf Fuel quality, we are often asked to tune for different fuel quality, either higher or lower, once an owner knows where his vehicle will be used and what it will be used for, we can adapt the tuning for environmental, altitude and fuel quality. And surprisingly, many manufactures do offer ECU remapping services, any showroom these days will be full of eco tuned vehicles, often sporting a "blue" badge, just like our E-Blue tuning, with our tuning though, you don't need a new vehicle to benefit from economy tuning. In addition, many manufacturers offer power and performance tuning upgrades too, or offer the same engine in a range of vehicles offering different power levels, this enables customers a choice, taking account of tax banding, insurance, performance, price and economy, In most cases though the choice is controlled with software, just like our tuning, but with TUNERWERKS you don't have to decide what you want from new in the showroom, we can tailor your vehicle to your needs whenever you want.


Will ECU tuning void my warranty?

No. A remap or any aftermarket work cannot and will not automatically invalidate a vehicles warranty. However, for your total peace of mind, all TUNERWERKS tuning work is insured and guaranteed, it's exactly why you should chose TUNERWERKS for all your tuning work. We say this with confidence because of the rigorous testing regime all ECU remapping and vehicle tuning files go through, and we even give a life-time software warranty too.


Can a tuned car go back to stock?

Of course it can and most TUNERWERKS dealers will offer this service for a small charge. But we'll be very surprised if that's what you want after taking control of your vehicle's performance. Should you lose your tuning files due to dealer actions or parts failure your dealer will be happy to re-install the map onto your car free of charge for as long as you own the vehicle.


Will my car use more fuel?

No, in fact quite the opposite, even on a performance tune, if you continue to drive the car in the same way as you did before the upgrade, your fuel consumption will probably improve. Of course if you have a track tune installed on the car and you are driving the car under the conditions with which a track map is intended you're likely to find a slightly reduced MPG Economy tuning can have a dramatic effect on fuel consumption, with considerable improvements being achieved along with huge money savings on fuel. All TUNERWERKS fuel economy tuning has a money back promise, if you are not delighted - you don't pay for the tuning.


Will the life of my engine be reduced?

No, not at all if you use a TUNERWERKS dealer. Sadly some engines can be over-tuned, "stressing" the engine, transmission, cooling systems, brakes, etc, and reducing the lifespan and reliability of the car. This is why it's so important to choose the best - choose TUNERWERKS, the research and development we carry out ensures all our tuning is of the very highest standard possible. We take great care to ensure that all of our modifications have no detrimental effect on your car. In a lot of cases the economy tune actually helps to extend the life of components such as the clutch and gearbox by making the delivery of the power far less aggressive and smoothing the overall drive of the vehicle.