Our booking policy

We employ a booking system whereby you choose a block of time sufficient to map your car, and then choose what date you want it – subject to availability of course.  It’s an easy process that only takes a minute or two but you MUST fully read and consider the advice given in these pages, otherwise it’s possible you will be out of pocket later if you don’t.  No refund or apology will be given for a problem that is of your own making

If you feel that it would be wise to have an hour or two with us to evaluate your car’s readiness for mapping, then there is the facility to do that in the booking options. An hour spent on evaluation might save you from wasting several more hours later should we find a fault that you were unaware of, such as your fuel pump not delivering enough fuel quantity at adequate pressure; or something else that live data might not show.

There is also the option to book just half an hour for power testing and such like.

We very strongly advise that you do not book dyno time for a car that is not finished and ready to go. Experience has taught us that imposing a deadline upon yourself automatically engages ‘Sod’s Law’ and things will go wrong, meaning that you’ll either not make it to us for the booking you’ve made, or not make it with a car in a suitably fit state for us to tune.

Only bookings cancelled over 48 hours in advance can be credited. When you book, you commit to buying the slot of time, so if in any doubt that your car won’t be fit and ready, DON’T book the time slot.

Our booking terms are intended ABSOLUTELY to save you from wasting your money by wasting time for both of us.

TWR Rover with early Zytek ECU mapped by Chipwizards

How Much Time Do You Need to Book?

Well, that depends upon how complex your particular engine is, how effective it’s cooling systems are and whether there are any faults or problems to be dealt with along the way. A simple Naturally Aspirated engine with no faults, a single throttle, adequate cooling capacity, fixed cam timing and with an ECU which is fast to map, like DTA, can sometimes be fully mapped in as little as three hours. However, a throttle-bodied (which need balancing), multiple-VVT engine with traction control, paddle-shift with lots of things that need to be configured and calibrated can take several days. If in doubt, contact us before making a booking.

It is very wise to make sure your engine at least runs before you bring it, because non-runners are very much an unknown quantity and it can often take some considerable time to find the cause, which ultimately costs you time and money. Having a running engine also allows you to check things such as whether your alternator is charging and that there are no fuel, oil, water and air leaks. Any of these may cause the mapping job to be stopped before completion and inevitable additional cost to you. If you can’t get it running without our input, consider booking just an hour or two ‘pre-mapping check’ with us to get it running so that you can check everything else is ok once it runs.

When it comes to booking a time slot for mapping, it is VITAL that you book a sufficient amount to complete your job and arrive on time for the start of your booking (Manchester and M62 traffic can be terrible), otherwise your time could run out before your job is completed, requiring you to re-book. The working day ends at 6pm, whether your car is finished or not. Consider that bookings after yours are likely to have been reserved for other customers.

Some typical FAULT-FREE examples of how long things usually take are in the table below.

For all turbo/supercharger converted cars on OE ECUs add at least two hours for file restructuring.

Manufacturer Models Duration
Porsche
3.2 Carerra, 924, 944, 968, 993 and 964 2wd
3.5 hours
Porsche
964 and 993 C4
4 hours
Porsche
996 C2, 986, 997 C2, 987 (please add an extra hour for 4wd models)
4 hours
BMW
E46 M3/S54
4.5 hours
BMW
E36 M3 3.0 (both DME and Vanos ECUs mapped)
6 hours
BMW
E36 M3 3.2 evo
4.5 hours
BMW
BMW E30 M3 (stock)
3.5 hours
BMW
E30 M3 (Alpha-N)
5.5 hours
PSA
Saxo/106 16v (inc cam timing optimisation)
4 hours
PSA
Saxo/106 with ITBs (extra time for balancing etc)
5 hours

What we require from you

You must bring your car in a suitably fit state to be run under load and at high revs for a period of time.  Fluid leaks are a fire risk, so make sure it doesn’t leak. Cooling is important, so make sure that’s all working properly and is correctly bled. If your car does leak fluids we reserve the right to charge for time spent cleaning up.

Often, very basic faults cause time delays, so consider everything that may affect engine performance such as whether your engine is getting full throttle, because something such as this wouldn’t appear as a fault code.

There needs to be no unexpected fault codes; fault codes are your friend. They save you time and money by not having a wasted journey for a tune that can’t be done because of a fault that should have been remedied.  We can’t tune faulty cars.

If, for example, you’ve removed your stock MAF to fit an airbox then it can be expected to have codes for MAF and sometimes the Air Temp sensor. ‘Expected’ faults are, of course, acceptable.  However, fault codes with no absolute reason for being must have their cause remedied, not just deleted in hope. Cars with faults may be rejected and no refunds will be given for the wasted time.

Your car also needs to actually fit inside the dyno cell and on the rolling road itself so it needs to be less than 7 feet tall and there must be enough ground clearance around the wheels for it to actually fit on the rollers.

There is a ride height calculator on the FAQ page, which we encourage you to read. It doesn’t take long, and it may save you time in the long run.

This symbol is your assistant; what is it telling you?
A leak can easily lead to a sorry situation like this. Make sure your car has no leaks