Quote:
Originally Posted by Brando
On turbos, why does this intake side have the extra holes drilled? Wouldn't it make sense to just have a larger opening?
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You'd probably find that this is a way of limiting boost. That is the turbo is matched to the engine performance required or desired not max HP.
Looking at the pic I would guess about half of the exhaust gas would go though the holes limiting the power gained.
Maybe it's been designed to use on cars with higher compression ratios? (That are not easy to lower... Newer crap disposable cars)