By now we see many acronyms on cars that indicate this type of petrol injection system, just mention the abbreviations FSI or TFSI, surely we all know them. There are many car manufacturers that have invested in this technology, among the first we can remember the Mitsubishi GDI, then followed by many others such as the aforementioned Audi and VW, but also BMW and Mercedes and many other car manufacturers.
Those who ask themselves if chip tuning units work are generally people who are familiar with the option of increasing the performance of their car (gasoline or diesel) and who have already done some research on the web. They have an idea of what solutions are available to increase the torque and power of their car's engine.
There's a lot of history here. The Alfa Romeo was one of the first car manufacturers to introduce a common-rail turbodiesel on the market with the 4-cylinder 1900JTD used on 146, 147, 156 (also used on the Fiat Marea JTD, Bravo, Brava JTD, and other Fiat-Alfa-Lancia group cars). Now, let's have a closer look at how this first edition JTD was made and what advantages it had over the previous indirect injection versions.
The first edition of the Milan Monza Motor Show 2021, the open-air exhibition dedicated to engines that set the center of Milan as a stage for hypercars, supercars, and world premier cars, ended a few days ago.
This engine was BMW's first 3-liter common-rail engine. It was installed in the first 330d, 530d E39, 730d, and also in the first X5 3.0d. It is a 6 cylinder inline engine with 4 valves per cylinder, 2 overhead camshafts, variable geometry intake manifolds, variable geometry turbocharger with electronically controlled pneumatic actuation, air-to-air intercooler, and a first-generation common-rail system.