Wish I knew what. I check it over after each race and I cant find anything broken or leaking. The only thing I havent been able to locate is some kind of exhaust leak near the driver side turbo and only because I can hear it do I know its there. There were no leaks during the 5psi boost leak test so that part is good.
Also I forgot to mention this is an 1/8th mile not a 1/4 mile. Id do a little better if the track was a bit longer.