Im just wondering.I dont own a base someone on honda-tech was saying they have a type-r manifold to put on their ep hatch.I was sure it would be stupid since base cams are not really flow monstors and thier is no need for a bigger manifold.
It's pointless because the type s manifold is just as good (or maybe even better down low) until about 7800rpm, where the type r manifold blows the type s away. If your revving to 7000rpm, and your using a type r manifold......you just wasted your money.
His car won't be slower than before. The Type S and Si use the same manifold, just that the Type S has a bigger throttle body. If the Type S manifold flows the same till 7k RPMs than so will the Si manifold. The only thing he will be benifitting from the Type R manifold is the bigger throttle body.