the other day i was racing some guy and he told me.that my evo spit out a big ball of white smoke and he thought he blew my engine....can anyone tell me what happened......

 

Do you have an evo X?

 

Generally (but it can be anything):
white smoke = coolant for example head gasket blown;
blue smoke = oil for example broken piston rings, valve guides leaking etc;
black smoke = gas for example tune too rich etc.

 

if you were in cold weather and you had just started the car then white smoke could just be water from the cold.

like if its 30 degrees outside and you turn your car on and rev it it will pour white smoke out.

 

or white smoke = sea foam :P
http://www.youtube.com/watch?v=1MzdiOv99MY


think u might have blown the gasket.

 

He was probably just jealous because all he could see was your exhaust from way behind you.

 

If you blew a head gasket you would know. I know when I blew one back in highschool the car was
incredibly hard to start and poured out smoke whenever I did get it to start.