91efhach
New Member
hey, i was driving my completly stock 91 civic hatchback dx, and i was hitting seventy in third gear passing a friend, and it was driving absolutly fine, but when we stopped he said that sparks or flames looked like they were shooting out my exhaust. i'm not running nos or high octane fuel or anything like that. is that a big problem or was it just unburnt fuel? any light on the subject would be greatly appreciated! thanks