This XR3i challenge car came to us in need of a custom engineering job. The front pipe to his race exhaust had been supplied by another well known exhaust builder but the front flange wasn’t strong enough. It kept bending causing it to blow.  Also the centre section of the exhaust wasn’t properly supported causing it to droop down and catch kerbs during the race. We gas flowed the manifold as far as regulations allowed and had a new flange laser cut from industrial strength steel. We designed and built a new smooth flow front pipe and centre section, then mounted them all with extra hangers and supports.