You posted his 1/4 times and his HP numbers. You know damn well a stock TT runs better numbers than that. You also know we give up two cylinders to all American Sports cars and displacement. We all weight about the same. But look what a few little mods can do for our cars. With just 5 stages these cars push the measured 400rwhp mark. For him to get that it's going to take some work or help from NOS. And one of those stages can be free ( gutting cats ), but I say go downpipes and test over that if you can.
He's auto too and still runs shity ass times. Please find new friends, this guy has a lot to learn....... But really I think he's just messing with you or your NA is all he knows and is judging from that point of view.