IRB Developments - Diesel Tuning and More

ST2 Conversion

- Fully fitted from £800 + VAT - depending on vehicle.

- Approx. 180bhp and 290lbft (393Nm) depending on vehicle specfication.

Taking things further - our ST2 conversion completely transforms the Td5...

Complete with our larger and more efficient intercooler; the ST2 kit offers V8 performance - but without the hindrance of poor fuel consumption.

Again, we do not concentrate on out and out power, and make questionable power claims… instead the ST2 conversion again focuses on drivability - getting rid of those points where you feel your standard Td5 is lacking.

To complement the ST2 tune, we also highly recommend the use of an performance replacement air filter, a full EGR replacement kit and a set of our uprated silicon intercooler hoses. If post 2002 we also recommend removing the Catalytic Converter and the fitting of one of our DeCAT pipes.

With this conversion, the Td5 turbo boost pressure is also slightly increased, but well within the safe limits of the engine (depending on customer requirements and the vehicle, the use of an additional boost box may be required - see below ) Typical gains are 50% over a standard Td5, but as mentioned before we concentrate more on power delivery (and drivability) than out and out figures. Please email for details.

Want more low end torque and no turbo lag -

Click here for Variable Geometry ST2v Conversion

Additional note:

It is possible to run increased boost pressures on a Td5 using a standard spec Land Rover turbo - however you need to use an additional control box to prevent the ECU seeing boost pressure over and above its preset max pressure level.

However, IRB recommends that if want to run more than 19psi an uprated turbo (or one of our Variable Geometry Turbo's) should be used, as above this pressure, the standard turbo will become inefficient and actually start increasing the intake air temperature above normal limits - reducing the benefit of running higher boost levels.