Unfortunately some, or rather many, are not perfectly accurate from the start. Mine when new displayed 1 ohm when turned on and touching nothing. I've spoken with a few techs and it takes a bit of money to find one that is good. It was partly why I said leave the N75 for now and lets make sure it isn't any of the other possibilities.
I say hang on to the N75 for now.
Try a leak detection test with VCDS.
Test for small leaks in the air inlet system.
Perhaps the WG has loosened or just needs a bit of added preload.
I say hang on to the N75 for now.
Try a leak detection test with VCDS.
Test for small leaks in the air inlet system.
Perhaps the WG has loosened or just needs a bit of added preload.