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Screamer pipe

A screamer pipe is a type of exhaust configuration fitted to some automotive turbocharged petrol engines with an external wastegate set-up, which vents the waste exhaust to the atmosphere through a separate un-muffled pipe, rather than back into the main exhaust track. This exhaust setup is known for its loud noise.{{cite web |url=https://www.sincocustoms.com/external-wastegate-piping/ |title=External Wastegate Piping

Principle of operation

To regulate the boost pressure on turbocharged engines a wastegate is fitted to allow exhaust gases to bypass the turbine and flow straight down the exhaust down-pipe.{{cite web |url=https://www.turbosmart.com/news/the-ultimate-guide-to-external-wastegates/ |title=The Ultimate Guide to External Wastegates

Limitations

This configuration allows exhaust gases to flow straight to the atmosphere, therefore they do not pass through the catalytic converter or exhaust silencer, which renders it illegal for street use in many countries owing to noise and exhaust emission regulations. Although exhaust emission laws do not apply away from the public highways in most countries, many race tracks have strict noise rules in place, once again outlawing screamer pipe use.{{cite web |url=https://www.torquecars.com/tuning/screamer-pipes.php |title=Blow off valves, dump valves and screamer pipes

References

Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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