Can someone explain why my car makes less horsepower?

>>14681803
One's at 6000rpm, the other is at 5000rpm

>>14681831
really? why dont they measure at 6000rpm then?

>>14681999
Because that not where both engines make their peak power.

>>14681999
Because it outputs peak power at 5000 RPMs.

Camshaft profile.
Variable valve timing.
Cylinder head design.
Intake manifold design.
Exhaust design.
ECM tuning.

>>14682042
ok thanks

One thing to consider is that in most cases an engine that is larger making less peak power will have more average power across the rev range.

>>14681803
There are so many factors that dictate why and how different engines make their power but the tl;dr version is because they're different designs meant for different applications.

See: Suzuki Hayabusa 1300cc engine that makes 180 odd hp vs Suzuki Swift 1.3 that makes 100ish hp. Same displacement, completely different engines.