Cadillac released new information about the 3.6-liter twin-turbo V6 to be found in its new CTS and XTS Vsport sedans.
The engine makes 420 hp and 430 lb-ft of torque thanks to its two turbochargers. Output was first announced ahead of the New York Auto Show in late March, but now the brand is discussing the powerband. By using small turbochargers and a top-mounted throttle body, the brand says its engine will offer peak torque from 1,900 rpm all the way to 5,600 rpm.
“By creating a very short path from the turbos to the throttle body, the compressors are able to draw air directly from the inlet box and send pressurized air through the intercooler immediately,” said Richard Bartlett, Cadillac assistant chief engineer for the 3.6L engine. “This gives the driver a more immediate feeling of power on demand.”
Turbo lag — the time it takes for a car to circulate sufficient exhaust fumes to spin the turbocharger — used to be a more prevalent issue, but especially among luxury cars it is all but gone. By using two or in some cases even three turbochargers of varying size, manufacturers are able to almost completely eliminate perceptible “lag” before the turbo can cram more air into the engine.
Cadillac will begin delivering both the CTS and XTS Vsport models this fall.
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