The Power Box houses a digital microprocessor which interceptsthe fuelling signals being transmitted from the ECU to the fuel pump; it then modifies them to ensure the exact ammount of fuel required for enhanced performance. Such efficient use of the fuel optimises consumption, reduces smoke emissions and there is less engine stress, enhancing engine life in many cases. The Power Box improves torque enabling the vehicle to change gears earlier and hold high gears at lower speeds, making driving more pleasurable. The unit fits using the original manufacturers plugs; these existing plugs are opened and the Power Box is secured in between. Full instructions are included with every unit.

Tunit Tuning products improve fuel economy, adjustable performance, increase power & torque, self install.

DA4418 - PSI Power Box Freelander Td4 2000-2006 £250.00	DA4419 - PSI Power Box Range Rover P38 - 2.5 Td 1995-1999 £250.00
DA4420 - PSI Power Box Range Rover 2.5 Td 2000-2001 £250.00	DA4421 - PSI Power Box Range Rover L322 Td6 2002 onwards. £250.00
DA4433 - PSI Power Box Defender & Discovery Td5 1995-2007 £344.50	DA4436 - PSI Power Box Defender 2007 onwards £338.00
DA4434 - Tunit Box R.Rover Sport & Discovery3 - TdV6 Euro 3 £340.00	DA4437 - Tunit Box Freelander2 - 2.2 Td4 - 2007 onwards. £345.00
DA4438 - Tunit Box R.Rover Sport 3.6 TdV8 - 2005 onwards. £340.00	DA4439 - Tunit Box R.Rover Sport & Discovery3 TdV6 Euro 4 £340.00
DA4435 - PSI Power Box •Discovery 4 - 3.0 TdV6 •Range Rover Sport - 3.0 TdV6 £270.00