I'm not asking about forced induction here. I want to know about more than your standard intake/header/exhaust kind of thing. The things I would like to know about are:

Performance fuel rails
Enlarged throttle bodies
Performance chips
New internals (strokers, high-compression, forged pistons/rods, etc)
High-comp head gaskets
Improved valves/springs
Intake manifolds
And anything else you can think of

I know that the Vitz shares our engine and has a healthy aftermarket in Japan, I was wondering how healthy that aftermarket is.

 

Nothing more yet, maybe in a year....
ken

 

ditto, also not sure if there are gonna be any. Our cars weren't really made for such things. Just maybe bolt ons.