Quote:
Originally Posted by GotBoost?
Granted it depends on the block and internals, but it is entirely possible. Throw a really aggressive heads/cam set up on it, plus your headers,intake manifold, throttle body, and other basic bolt on's. I fail to see why you think that its not possible to milk another 60-80 hp out of it.
I'm pretty confident that its a very conservatively tuned motor like most factory production cars.
I've also seen far more aggressive power gains from NA motors, for instance a 99 Formula with a heads/cam/intake/headers pushing 440 whp (305 is stock at crank).
Why do you find it unreasonable to put 280 out of a FR-S / BRZ
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This is a strung out Subaru motor. The highest power EVER from a normally aspirated 4-cylinder Subaru motor from the factory.
People have tried, and failed, to get to 250+ N/A power with previous N/A Subaru 4-cylinders. The only one I've ever seen was a completely redesigned block on a pure race car in Japan that got 280ps, but probably cost $30,000 just to design and build.
Can you get another 20hp with this motor? Probably pretty easily with bolt ons (intake/exhaust) and a tune. 30hp? Maybe with better fuel. Cams? Probably not more than 5-10hp more. More compression? Maybe another 10-15. Slightly more displacement? Couple more. Custom fancy intake parts that don't exist yet? No idea.
Unless that DI is capable of some serious magic, I don't see any way right now to get 50-60hp MORE out of this motor.