LGX engine power output query

This new motor is specced at 250 kW when mounted north-south in a Cadillac. But when mounted east west, it is only 231 kW in Buick or 235 kW in Opel.
So what is the difference? Does the transverse installation cramp the exhaust and air intake, or did Cadillac just get a hot engine map?
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Let me guess, one car is sold in Europe and one is sold in the US and they have two methods for measuring BHP? --scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."

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On 4/12/2018 8:06 AM, Scott Dorsey wrote:

Recalls the days when a 396 in a '65 Vette was rated at 425 hp, exact same engine in a '66 Chevelle was rated at 375 hp. I'm sure there are many more examples.
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On Thursday, April 12, 2018 at 9:06:47 PM UTC+8, Scott Dorsey wrote:

Nein, in the XT5, the engine also scores less power when flipped around.
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Is that because the engine is capable of providing N horsepower but the transaxle is only rated less than that? --scott
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"C'est un Nagra. C'est suisse, et tres, tres precis."

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On Thursday, April 12, 2018 at 3:27:23 PM UTC-7, Scott Dorsey wrote:

Or that the transverse has to have a crossover pipe... maybe resulting in a less efficient exhaust system?
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On Friday, April 13, 2018 at 6:27:23 AM UTC+8, Scott Dorsey wrote:

Well maybe for the 9T50 gearbox, which can't handle a lot of torque - might explain them detuning to limit the maximum torque. But 2018 Lacrosse gets the 9T60 and still has the slightly weaker engine.
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