Stock engine performance and RWHP?

[Hindsight]

Stock EJ WRX engine is about 165-175 to the wheels. I believe that's good for a 12.X 1/4 mile run. But with just an ECU tune on the WRX (~$250-500), you can get 250-270WHP.

[13BRV3]

Stock EJ WRX engine is about 165-175 to the wheels. I believe that's good for a 12.X 1/4 mile run. But with just an ECU tune on the WRX (~$250-500), you can get 250-270WHP.

Is that 165-175 rwhp in the WRX, or in an 818? I'd expect the AWD in the WRX to have more loss than an average 2WD setup. To get that much with a tune, it has to be increasing the boost a significant amount?

Rusty