I am dynoing 355whp on my 5EAT did a pull 1-4 letting off after shifting into 4th. I threw three codes. MAF which I have a new larger housing for mine, a vacuum leak.... haven't taken a look yet, and P0171 TCM MALFUNCTION. Any ideas? only happened under full WOT not sure where exactly that code kicked in but kinda scary since I have a built transmission and do not wanna F it all up.