If you’ve got a Volkswagen with the 1,9-litre turbodiesel, an SAC branch near you can make it an even more efficient operator, with performance and fuel consumption benefits.
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Tuning specialists Steves Auto Clinic are breathing new life into the Golf 4 TDi by offering an impressively refined conversion which gives it sparkling performance, and at the same time have developed a similar but even more powerful upgrade for the Polo 1,9 TDi. |
And while the cars are radically different – with the latter fast becoming the thinking man’s hot hatch and the former a tried and tested all-rounder – they both bear all the hallmarks of an SAC conversion. |
That means a holistic approach starting with extensive research and development, followed by independent local testing, ensuring long-term mechanical integrity and real world gains: plenty of modified cars make additional peak power, but this needs to be usable in terms of driveability and overall efficiency. |
Both are fitted with similar powerplants and while there are differences in the actual injection method and technology, SAC uses the same basic approach to unleashing more power and torque. |
The Polo’s more modern engine is also fitted to a number of other VW, Audi and more recently SEAT models, and owners of these vehicles would also benefit from similar upgrades. |
Key features of an extensive underbonnet makeover include: |
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In the case of the Golf, power swells from 81 to 108 kW, an increase of 33 percent. The Polo, which starts off with 96 kW, lit up the dynamometer at SAC Engineering with a max of 125 kW and a torque increase of about 18 percent. These numbers place it firmly in the upper echelon of the hot hatch class. |
Before & After Tests – Volkswagen Golf4 / Polo 1,9 TDi – |
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All tests conducted using a Racelogic VBOX GPS-based data acquisition system
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