Bosch reconditioned replacement injectors to replace Lucus ERR722 these are a direct replacement.
No remapping is required.
kit includes :-
8 x Injectors inc o-rings
The standard Lucas fuel injector is a “disc” type design that dates back to 1984 – over 30 years ago! It is cheap to manufacture, and very quiet in operation. However it is not as good at atomizing fuel as other designs, and this leaves scope for improvement. This injector design has been used with all Lucas 14CUX and GEMS fuel systems up to 1999.
In the simplest terms, fuel droplets burn from the outside in. It follows that the smaller they are the quicker they burn, hence releasing more of the energy contained in the fuel. Ultimately this gives the most efficient use of the fuel, and the cleanest exhaust emissions. There is a minimum size for fuel droplets, but it is not seen outside of Formula One where no engineering effort is spared.
Ever more stringent emissions legislation has driven advances in fuel injector design. Improvements in manufacturing technology have produced some far more effective fuel injectors, with the aim of producing more efficient combustion. Some of the best designs are the Bosch Type II and Type III designs, but of course there are still other cheap and nasty injectors available.
During testing on standard TVR 5.0 Litre engines, the injectors picked up 8 lb/ft of torque everywhere over a hand-picked flow-matched set of brand new Lucas originals. Interestingly the improved torque was seen with 2-3 Degrees less ignition advance, denoting improved combustion speed and efficiency.