Quote:
Originally Posted by ichitaka05
Wait, wait, wait... you're comparing Si to base model Impreza? Am I the only one think that's not the fair comparison. Base Impreza is only Impreza with NA engine. While Civic has ridiculous amount of NA engine and model to choose from. Specially you're using top base Civic Si (in US), while you're using lowest base for Impreza? Because it's NA?
Also you have forgotten about the drive train. If that KA20 engine was put to AWD drive train, do you think it'll dyno same amount of hp & tq? My guess, I don't think so.
Honda has fan for NA engine, but Subaru fan is pure Boxer Turbo engine. Took em over 10 year to finally get extra 5hp/3tq and still running SOHC on current 2.5L engine (EJ253) on NA, while took em 3 yrs to get 20hp/26tq on Turbo with DOHC (EJ257). Subaru don't give a damn about NA Boxer engine (no offense to Subie fan here). They put their whole research into TURBO boxer engine. Cuz they know that, they can't make good NA boxer engine like Porsche and no one is stupid enough to buy $30k plus NA Impreza while you can buy Turbo ver for cheaper.
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bhp is bhp. Same goes for torque. AFAIK, the Subaru engine figures are not at the wheels. So yeah, corrected for drive train losses, it ought to put down the same hp & tq.
Also, comparing a Turbo engine to an NA engine is pure bollocks. Apples to oranges; Turbo engines almost always have a higher specific output (hence why in motorsport their displacement is calculated @ 1.7x the rating).