First off, the valves worked great! No gas spillage and fume issues this race. Did hear a soft honkey sound once, kinda like if your meep meep horn was buried. I’m thinking that was the valve “blowing off”. The car ran pretty well the whole event.
The exhaust has developed a leak again, the flex joint has failed yet again. The guy at exhaust system said he’ll look for a heavier duty one that has the stainless mesh on both inside and outside. What a PIA, I later thought maybe I should have them put in flanges so the flex joint could be bolted in & out. I’m confident enough in my welding that I could a weld a section, but not while its still in the vehicle.