John I am the one that tried the Granatelli MAF sensor, and I got no improvement I got lots of Check engine lights, and no matter what I did it killed the power, and made the vehicle run badly at idle. However I do have a supercharger installed so it may have been that the check engine lights were being registered because it was reading to much air into the intake the return policy was good and I got my money back, so if you do not have a Super charger you may want to try it. I got mine from JCWhitney