I have a 03 Evo and everything I am on the interstate or a straightaway and give it full throttle say start at 3rd gear and work my way up I shoot sparks out. Im not sure where it comes from but a buddy was behind me and he said they were just flying from under the car. He said is was nothing major but you can tell they were coming, I have exhaust on the car could it possibe be from that or what?.....thanks

 

Misfire? Anyone else have any ideas?

 

bump

 

Take it to a shop. Preferably before you get a WR turbo.