DH Automotive Ltd is a remapping/tuning company:
We tune all post-1998, drive-by-wire, VAG/Porsche, and a select few other brands with Bosch/Siemens ECUs.
Please read and understand our “responsible tuning policy” before undertaking any tuning work.
There is a comprehensive FAQ and instructions on modifying your car that should be read and understood before modifying and bringing your car to be tuned. This is available in the reception.
We cannot warranty any engine. We can guarantee our remaps will be safe at the time the car is mapped.
If you are not happy in any way with the remap, we will refund the remap cost within 14 days of the remap.
We cannot quote any lead times for non-OE work or modifications to cars. All project or custom work will not have any defined lead times or completion dates. We will only give an expected time for the labour of work.
Running a car on the dyno is at the customer’s own risk.
Any test drives by DH Automotive Staff are at the customer’s risk. Our staff are insured to drive customer cars.
We charge £25+VAT per day for storage of cars, which will take effect 48 hours after the completion of the work.
All cars must be taxed, insured, and have a valid MOT at all times when on DH Automotive property. We will not drive any cars unless they are known to be 100% legal for use on the road.
Cars will only be insured by DH Automotive while work is being carried out inside the workshop.
There are no warranties on any modified cars.
For cars that require remedial work or modification prior to mapping, we need to be informed of your budget as work may extend beyond initial estimates. We need this information beforehand, especially if the car is being left with us.
Servicing/Mechanical Work/Diagnostics:
In addition to remapping, we can service/maintain/diagnose/modify/upgrade all post-1998 drive-by-wire VAG/Porsche cars at the owner’s request to their specifications. There are no warranties on any modified car parts fitted to a customer’s car.
Customer supplied parts:
When supplying your own parts for fitment, please ensure they have been fully tested (with test results provided) and all fitting instructions are provided. The customer will have to cover costs for any fitting issues or testing for parts we have not seen/tested/fitted previously. We cannot estimate gains or costs for parts we have not seen/fitted before.
We use VCDS, Durametric, and VAG factory software for diagnostics.
All cars for diagnostics/remedial work should fill in a “diagnostic problem form” available in reception to help us identify the problem, when and how it occurs. The problem should be demonstrated to a member of staff. The form must be filled in to correctly identify and fix any issues.
Service schedules for modified (greater than 30% gain from stock) must be shortened accordingly. All engine oils and filters should be replaced on a 5k miles basis. Gearbox, diff oils, and spark plugs should be replaced every 10k miles. Cambelt service should be carried out every 20k miles or less.
Cars with more than 50% increase in power should have Health Checks every 4k. Oil and filters in the gearbox and engine, and spark plugs should be changed every 4k or after any track day.
All OE standard parts fitted to a modified car will not carry any manufacturer’s warranty or guarantee.
All modifications that differ from OE specifications, carried out by DH Automotive, are modified at the owner’s risk.
An Engine Health Check should be carried out every 6 months.
All cars should be test-driven on the day of pickup to make sure any issues or problems have been resolved on the day of pick up.
DH Automotive cannot test-drive cars for prolonged periods of time. If the car has an intermittent issue, the customer has to drive the car until the issue is testable by DH Automotive.
We only use genuine parts for servicing and repairs unless otherwise stated or requested by the customer.
We request that all MAFs on cars are genuine VAG parts due to aftermarket MAFs causing intermittent or regular failures. There is no warranty if the MAFs have been damaged by contaminants sprayed on them.
Running more power and torque through the drivetrain will always put more strain on parts.
You can have a failure on the first run after running more power, or you can have failures years later. Please understand this, and mechanical issues will not be warranted.
After tuning, please drive your car for as long as possible before driving home in case you want anything changed or have any issues. We will always help, but if something is wrong and you carry on driving for days or weeks, it can cause further issues.
To prevent and prepare your car for tuning, there are some prerequisites you can make sure you have done or ask for a quote before tuning:
– Make sure your gearbox software is up to date.
– Service the gearbox, transfer box, diff, and Haldex.
– We recommend the longer filling tube in DQ250 boxes for better cooling.
– Haldex without filters must be flushed, the pump removed, and the mesh cleaned.
If you are not confident or worried about your car being reliable or parts wearing or failing, then please do not ask us to tune your car. Please do not drive away without making sure you are happy with your car.
We use a service checklist for all service inspections. These are available for your car on request at the time of picking up.
All cars booked in for service or diagnostics should be picked up within 1 week of the booking-in date, or storage charges will be incurred.
DH Automotive does not carry out any accident damage repair or bodywork.
By leaving your car at DH Automotive, or having work undertaken by DH Automotive, you agree to all the above terms and conditions.
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Terms of using the dyno:
– Dyno power run (up to 3 runs) is charged at £120+VAT.
– All dyno time is chargeable at £120+VAT/hour.
– Dyno runs/usage are at the customer’s own risk.
– Any work carried out while on the dyno will be charged at £90+VAT/hour.
– All towing eyes must be accessible to safely strap down the car.
– Cars should have at least 150mm clearance under the car to clear the Rolling Road.
**Watching the dyno:**
Due to Health and Safety, you should not be in the workshop but are welcome to watch from the dyno roller shutter door.
**Using another company’s tune:**
We would rather not get involved in measuring tunes from other suppliers but can provide it at your own risk.
**What does the dyno measure?**
It measures the torque applied to the wheels on a wide-open throttle run. From this, power is calculated to give you a power and torque curve.
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DH Automotive “RESPONSIBLE TUNING POLICY”
– All cars that are remapped/tuned/modified should be declared in full to your insurance company.
– We do not map cars to give you a set power; the car will be tuned to what is safe for the car.
– Regular Health Checks should be performed by DH Automotive.
– Modifying cars in the UK generally does not add value and often devalues resale value.
– Extreme modifications (>50% gains) carry significant risk.
– Any non-OE camshafts can cause a rough idle.
By choosing to modify your car, you accept the associated risks and responsibilities.