Report Found useful power gains.. in Engine/Ancilliaries Posted November 5, 2007 Hi all Ive been reading this thread with interest, as I am rebuilding the Engine on my 85 turbo I had a look at my trumpet arangement. I once done similar stuff to an engine in a 1972 MG Midget. There has been loads of research done on the A series austin engine mainly as it has been used for mini racing so there is loads of info on engine breathing. The whole buisness of sharp edges on trumpets causing turbulance to the air commiing in has a big effect so I am going to design and make new trumpets for my car. The main trouble I will admit to now is that I havent had experiance with driving Esprits yet and as my car will take about another year to get on the road its going to be a long wait and I wont know if its an improvment or not! But Im sure I can make ot better!!