We’ve rebuilt the engine over the winter and put the Ginetta G4 on the rolling road yesterday to see what it was doing. The setup on this engine was massively rich to the point of bore wash. It was running at 13.4% CO. We knew it must have been rich when we stripped it down as it was black inside. As the engine is now fresh we haven’t revved it all the way through but the initial run showed 124.3bhp. We leaned off the mixture to a safe level and found an increase of 4.3bhp. Once the engine is run in we will rev it all the way through and hopefully see closer to 140bhp.