> Increased Shift Response, Torque Limiter Modifications and RPM Limiter Adjustments

Our custom written DSG transmission upgrades are designed to improve gearbox shift speed, response and smoothness. This tuning option can include launch control, shift and torque limiter functions and setting adjustments to give the driver the best possible driving experience.

> Increased Shift Response

Shift response can be improved by up to 20% and paddle-reaction-time by up to 40% (in Sport mode) which provides a smoother gear to gear transition – reduces clutch slip under full acceleration and helps protect the clutch from premature failure.

> Torque Limiter Modifications

Through DSG control unit tuning we release the extra torque produced from your engine whilst ensuring the safe performance of all mechanical moving hardware within the DSG transmission.

> RPM Limiter Adjustments

The DSG has control of RPM limiters for each gear. Increasing these shift points gives the driver further control and command of the engine’s power in the upper RPM ranges

AdBlue is used in a process called selective catalytic reduction (SCR) to reduce emissions of nitrogen from the exhaust of diesel engines but it has been known to produce very high operating costs.

If you wish to reduce or completely eliminate the consumption of AdBlue in your truck we can reprogram the ECU to allow this. Our procedure will not illuminate dashboard error lights.

Note: Removal of the AdBlue system (or similar) should only be carried out on trucks for off-road or racing use. Using a vehicle on public roads with such a system disabled is at the owner/operators risk.

If you have any questions please get in touch with your nearest Topgear Tuning centre – with over 270, we have one near you.

EGR works by re circulating a portion of an engine’s exhaust gas back to the engine cylinders. This dilutes the O2 within the incoming air stream and provides gases, inert to combustion, to act as absorbents of combustion heat in order to reduce peak in-cylinder temperatures. NOx is produced in a narrow band of high cylinder temperatures and pressures.

However, the valves can become clogged with carbon deposits, causing them to fail or stick, thereby causing error codes and the vehicle to not run correctly. Our solution is a simple and effective method of improving the efficiency. Topgear Tuning’s software disables the EGR valve, and results in lowered engine temperatures, improved throttle response and better economy.  It can also increase engine life by reducing oil contamination and carbon deposits.

If a pd Diesel engine starts easily and quickly when cold but struggles to start when hot, this is described as a Hot Start Problem.

These diesel engines are started by an ECU and not by the driver. Pressing the accelerator pedal has no effect during a starting procedure. Starting is actually controlled by a ‘starting map’ in the ECU and is based on starter/engine speed (rpm) and injected fuel quantity (iq).

Generally, the ECU will not allow start fuel injection until the engine rpm is above a fixed map value.

Such problems can occur from low battery charge, engine coolant temperature sensor faults or the starter motor itself.

However, the problem may be the actual Hot Start Map within the ECU.

O2 Delete remaps are for those who have fitted either sports­cars or de­cat pipes within their exhaust system and are subsequently having problems with the engine light being triggered due to emissions faults for error codes P0420 and P0430 (Cat efficiency). We can solve this problem by disabling these checks within the ECU map.

Topgear Tuning’s Launch control Software manages the amount of power to the wheels optimum traction is achieved.

From 2-4 MPH the RPM is limited to 2500-2750rpm. Once the pre-determined speed is reached the RPM Limiter will automatically move to normal RPM and from that point maximum power is allowed.

MAF deactivation is not recommended as it is a very important sensor for fuel regulation, but sometimes (normally on high powered tuned cars with bigger turbo/injector modifications) the MAF reading hits its maximum value and touches the maximum allowed voltage read by the sensor making a fault code in the ECU and places the vehicle into a safe mode (limp mode).

On vehicles so equipped, this alternative involves the use of a manifold absolute pressure, or MAP, sensor. The MAP sensor measures pressure in an engine’s inlet manifold. When coupled with RPM data, and a table of volumetric efficiency over the operating range of the engine, the MAP sensor can be used by the engine management computer to calculate fuel requirements.

Many vehicles are programmed with a top speed limiter. Our speed limiter removal software allows the vehicle to reach its top speed. However, we are mindful of international road and highway laws and take the opportunity to stress our service is intended for track use only.

Many people do not like modern Start/Stop systems (which turns off the engine every ­time they stop), but it’s becoming increasingly common on new vehicles. Normally, there is a disable button, but this has to be re­set every ­time the engine is restarted. With our Start/Stop Disable ECU remap, the function is disabled permanently.