How can you be certain there are "faulty times" when based on previous history, you couldn't keep up to begin with? The "maker" investigates times if and when required. Have you contacted him personally to vent your concern on a particular car? It's not uncommon for seasoned tuners to use a completely different tune at Indy. As some supposed "fast tunes" can be quite unrealiable online. But, just like in GT5, the speed test isn't at Indy and there are some subtle differences. If you don't have the skill set required to tune for the test track, don't assume the people that do, are cheating.