Update
Replaced both cam sensors and fuel filter. No change
To do
Swap ignitor and crank sensor (although I don't crank sensor will make a difference)
I found out why the car dies under hard acceleration...Rev limiter is kicking in around 5500-6000 rpms.
I also found that the car idles high for the first 15 minutes of running after cleaning the throttle body, plates, and intake chamber. It goes back to normal idle after warmed up good. Well, at least it's nice and clean now and the top of the engine is spotless...no more grease evywhere
Still I can't figure out why I get this shudder under light acceleration 1500-2000 rpms under load (uphill usually). This can't be normal, right.