Well it can and does, here are some stock MAF calibrations to prove it. The value is airflow in grams per second. First is a stock 5.7 Vortec truck.
5.7 Vortec Truck.jpg
Next is a Chevy Express van. Same 5.7, same MAF, different intake tract.
5.7 Vortec Express Van.jpg
Now an LS1 Camaro. Same MAF, different intake tract..
LS1B Camaro.jpg
Now an LS1 Corvette with the same old style MAF as the Camaro and different intake tract.
LS1 Corvette.jpg
Now an LS1 Corvette with the later, 6.0 type larger MAF. Same intake tract as older style MAF, just larger tubing and MAF housing.
LS1 Corvette 2004.jpg
And now a C5 Z06 with the same MAF, same intake tract, but the MAF came descreened from the factory. These cars in particular are sensitive to aftermarket cold air intakes and have a bit of a tendency to throw a check engine light and need a MAF recal to run properly. Fortunately mine has not done this with the Hurricane ram air intake.
Attachment 1839
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