^ Well said. Standard engine, standard turbos, standard manifold pressure (12psi max), in my experience they work fine. Once you start leaning on them, I don't think any China coils will handle it.
Works fine for what it costs as a standard replacement. Don't know why people who want to push 20+psi and want to make 300rwkW think $300 coils will be as good as $700+ ones.
Sort of like asking standard turbos to push 15+ psi.