Good friend of mine works for a well known tuner here in my city and once I was in his workshop where they had a 1000hp+ Holden Commodore on the dyno, they had a scoop to extract exhaust fumes with huge pipe on it, the car did a pass on the dyno and blew away the extractor. We put big sand bags and water drums on it and when it did the shootout mode still blew it away and busted the flexable pipe away with it......crazy. Unfortunatly then we were then choking on rich fumes