[barrkel]

Done right, a more powerful engine needs uprating of a bunch of other components - clutch, brakes, suspension, tyre profile, cooling, exhaust, air intake and so on. Almost certainly not a big deal with a 10% bump, but if it was a big bump, costs could be saved elsewhere in a less powerful vehicle.

[potato3732842]

In a laboratory run by Redditors in a universe where cows are spherical then sure.

In reality cramming a little more air through the thing is no big deal because it'll be within the fudge factor of all the other parts.

Nobody is engineering a clutch to within an inch of it's life on a 200hp shitbox, they'll use the same clutch as the 300hp version of the same engine. Yeah the trans shifting tune will be different but that doesn't necessarily mean that the components in it are different.

[lurk2]

But then why offer the ability to unlock the engine’s full power on a model that isn’t engineered to accommodate it?