I purchased an Explorer intake manifold w/ 1" spacer, 70mm mass air, 70mm throttle body, 70mm egr spacer, along with 1.6RRs. I was looking for a low buck way to get a bit more power out of my car, and hopefully I will get some... Should I use the manifold spacer? Current mods are in my sig.
In my experience, those manifold spacers are mostly hype. Use it if you're looking to clear a tall set of valve covers, otherwise all it's doing for you is making your install that much more difficult.
I mainly got the spacer for easier access to the valve covers and because it came with hardware that I didn't have. It was actually a 1/2" so that should be fine.
Not how it works. The increased runner length MIGHT shift the torque curve lower in the RPMs ever so slightly, but it wouldn't actually result in MORE torque. In reality it probably wouldn't show any real difference at all, though.