Sudden Under Power

[mdss]

That to me sounds like the car may have gone into "limp mode" or "safe mode" would check the fuel pump/o2 sensor or maybe as someone said it has a big airleak
Try running diagnostic as if its electrical it may have logged a code


Hope that helps.

 

[kayour]

or any wire cut off inside...from my experience
wire to plug coil, near the connector cut off..and cause the problem intermittenly
my solution..just by passed the connector

 

[4gbanger]

the only way to solve this problem is to check one by one.. sometime is a big issue such as ECU short circuit but sometime it could be simple as loose connector..