Super Formula will try to simulate the sound of the V8 engine in the next test

The Japanese championship has held tests with its two SF19 development cars before or after every race weekend so far this year as it seeks to reduce its carbon footprint and improve racing quality.

This week’s two-day test at Autopolis on Wednesday and Thursday marked the third such test with development drivers Koudai Tsukakoshi and Hiroaki Ishiura.

The focus of testing so far has been to test carbon-neutral tires and fuel made from more sustainable sources, as well as hemp-based bodies, and experiment with different levels of downforce.

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But on Saturday at Autopolis, Super Formula JRP promoter boss Yoshihisa Ueno revealed that engine sound testing will take place at the next test, scheduled within two days of the June 19 Sugo event.

Super Formula has used two-liter turbocharged inline-four engines since the 2014 season, but Toyota and Honda both supplied V8 engines from 2006 to 2013. Prior to that, the series’ Mugen engine was also a V8.

The Sugo test will still use the standard inline-four engines, but a new exhaust pipe layout has been developed by Toyota to try and mimic the sound of a V8.

This involves creating a separate exhaust pipe for the turbo wastegate, instead of the wastegate exhaust using the main exhaust pipe.

In theory, this will double the sound produced by each individual cylinder per revolution, simulating additional engine noise from four cylinders.

However, technical director of Super Formula’s next-generation testing program Yoji Nagai has suggested that such an innovation, even if successful, is unlikely to be introduced as early as next season.

Ueno has confirmed that spectators will be welcome to watch the test take place at Sugo on June 20 and 21.

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