Wondering what, if any, are worthy mods to make on the VG33E to legitimately increase power and efficiency.
So far, I've got a HKS Super Hybrid 3-layer foam air filter, NGK IX plugs and wires. With a new car on the way I have put engine swap plans on hold but am still hoping to get a little more grunt out of the VG.
I lack the knowledge to make any intense internal mods but I'd love to learn. In the meantime, I'd just like to know what are some proven bolt-on/plug-and-play upgrades, not this universal eBay bullsh*t.
Any and all suggestions are appreciated.