can any 1 help iv noticed a small crack in the outlet on my engine where the exhust fits on its a nac 28 hobao every thing seems ok all bits mooving freely and restriction in all right places will this be a problem can any1 reply asap ps havent used engine yet turned it over once on idle al seemed fine this a new car and im new to this game i see this thread gets read but no1 answers could som1 give me their thoughts on this matter as im worried its a major prob this is my noob showing thanks