Sentences with phrase «backpressure from»

The LT1 also uses a variable output oil pump that helps reduce the load on the engine, a plastic intake manifold with tuned runners, and cast aluminum exhaust manifolds designed to act like headers to reduce backpressure from exhaust flow.

Peak power is now 490bhp (up 37bhp) while peak torque also increases to 372 lb ft, an increase of 14 lb ft.. These improvements have come from a new design of piston crown, improved mechanical efficiency thanks to a reed valve in the crankcase to evacuate oil and blow - by gasses, reduced backpressure from a redesigned 4 - into - 1 exhaust manifold and a reprogrammed ECU that exploits advances in the anti-knock properties of the latest petrol formulas.

Not exact matches

To make the V sound as fast as it goes, Cadillac is relying on backpressure - reducing full - throttle flaps in both exhaust pipes and some digital tuning from Bose.

The pipes of the manifold and of the exhaust system, which have been painstakingly optimized for low backpressure, are hydroformed from stainless steel and are very lightweight.

Changes to the variable intake system include a throttle valve enlarged from 76 to 82 millimeters, optimized cylinder heads, and a low - backpressure exhaust system.

The emission system's higher backpressure does bleed some power from the engine, so while the global Duramax makes 197 hp, ours produces 181 at 3,400 rpm.