Car was running fine was drivig down a very bumpy back road at high speed next thing you know no power and fuel smoke out the pipes barley stays running.??? What did I break ? I have a spare ecu so i put that in no help. If you guys have any ideas let me know. I als checked the exhaust to make sure the cats were good unbolted at the downpipe no help.

 

Got a check light?
Maybe a loose sensor connector..

 

no check engine light

 

Sad to say.... but do a compression test.