HP gain?
Not worth it, the b16 manifold is fine, the runner length is tuned to you engine(by honda), the plenum is the correct size to promote as much low to mid range tq as the is is capable of making. I'm not going to lie, they look good under your hood but on a B16 kinda pointless.
Another thing is don't plan on getting a better throttle body unless you do major work to it. Throttle bodies can cause problems with a slightly modified engine. Stick with the regulars and go from there if that isn't enough.


