Engine smell

Ive recently purchased an X19 and when driving with the roof off and windows down im finding to smell from the exhaust to be a little nauseous. Is this normal or can any one offer any advise to reduce the smell of fumes etc

Cheers

Just had another look and the box is blowing on book sides on the seems so assume this is the problem as most of the fumes are leaving the box from the sides rather than the exhaust pipe

Yes that's your problem, it's surprising how a hole 6 inches from the tailpipe exit makes such a difference to the fumes entering the cockpit.