I own a 7/75 280Z 2+2. I had a turbo installed in '78. There was a problem with performance. It would accelerate to approx. 110 mph, then drop down to about 90mph as long as it was in the boost range on my gauge. A mechanic suggested to install a potientiometer(0-5000ohm) to fool the air flow meter in to staying open while the turbo is in "boost". Supposedly the flow meter wouldn't allow a large amount of air to flow in unless this was installed. Does this sound like a wild story or what?