Perhaps Hennessey is fudging numbers, perhaps not. They do post the dyno charts, sure they could even fudge those too, but I find it hard to believe a company like Hennessey, who is actually registered with NADA, would false advertise, especially if it were to get out, it would ruin them. I'm not trying to argue in HPs favor, but it seems most of the posts here in favor of Livernois are made by those who have dealt with them, installed their tunes, and have experience with them...yet, those speaking against HP have no experience dealing with the package for the SHO.. I am open to opinions, sure, but I am one who needs to see things for myself. I will gladly be the sacrificial lamb who spent double the money I could have to see how HP really performs. Not to take anything away from Livernois, they seem like a solid company and certainly have the respect and praises of everyone here.. I am going to go ahead and install the HP intake, and take it to a local Dyno here in Buffalo, I will post the results. I mean, what the ****, the money is already spent, right?