A monkey with a stop watch is about as accurate as those..........
I saw a guy on here once say according to the Gtech he was making over 360whp at some stupid low boost level... it was something like 15psi..... that should give you an idea of how accurate they are.
[B]1951 McCormick FARMALL M
2007 MINI Cooper S Turbo... new project car
1998 Chevy 3500 Ext cab, long bed, 4x4, duelly, turbo diesel
2004 Harley V-Rod.... sex on wheels
2011 Harley Electra Glide Ultra Limited