Based on some helpful tips from Bzzeigler, I have started data logging with the Torque app in an attempt to resolve my long-standing P0101 MAF Circuit out of range error. When I look at my Boost/Vacuum levels in the data log (.csv file brought into Excel), I see the boost levels peak around 14, with most higher readings holding steady around 12 PSI. But when I look at the Vacuum levels, they seem to max out/hold steady at -12.0 PSI. When I look in the Torque app on my phone, though, the vacuum readings on the gauge seem to vacillate between -18 to -21 PSI when I am at idle. Does anyone know why there is a difference between the data log and the gauge on the phone?
Thanks for your help.