True to a point. This particular engine was run with no coolers in lower ambient temps where as some other engines I was testing with twin coolers in line on the fuel side if the circuit as opposed to the pulse line also in lower ambient temps so those will also vary results between them. I need to wait until the temps are normal for everyday racing before really getting solid numbers but even then, results will vary person to person depending on where, when and how it is run but I can tell you there will be a noticeable increase in performance and runtime between stock and my race ported ones and that is my main concern instead of worrying about the exact runtimes it is getting as results will vary region to region and person to person.