Man! I feel youYeah they do have varible timing. I think i have narrowed it down to the tune. Car is still broken, Though. Apprently Roush uses a specific Honda tensioner for the SC. Really difficult to find oddly enough. And to add to it I am in Germany.
it's madness when you want to figure what causes the issue yet the resources are limited.
Good luck man, try to reach a tuner who is expert enough to take sometime reading logs!