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Originally Posted by why?
Who knows. But if you can get 20 hp out of the twins just changing the header, saying no one will get near 300 out of this engine is silly. I'd be stunned if you leave the engine and turbo stock but add tuning and e 85 you could not hit 300. I'd also be stunned if the engine wasn't totally overbuilt so you didn't have to open it up until some gigantic amount of boost was being pushed through it.
I'm not saying it can hold at some dumb number, but thinking the proper bolt ons and tune cannot get to 300 is silly. That isn't a massive amount extra. Toyota knows what the aftermarket can do to a car's reputation, and is courting them by making sure what they put out has some reasonable amount of head room.
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300 bhp (at the crank), I agree, should be possible with some bolt ons and e85.
300 whp I'll bet against, that's almost what the wrc car puts out, someone will try and I bet it blows.
They can't make a profit overbuilding the engine compared to the wrc version. I guarantee it has cheaper pistons and rods and a less aggressive cam, I wouldn't be surprised if the wrc cars have intakes/exhausts sculpted by hand and checked on flow benches while the consumer products will make sacrifices for mass production.
Please show me the +20hp header without a tune, I must have missed that one.
There will be so few of these made that the aftermarket will be weak aside from stuff that can be easily brought over like coilovers due to shared tnga components.