This unit will allow the conversion from the very restricive stock MAF sensor to the free flowing and accurate GM sensors. These units measure air much better than the stock units allow for quicker spool up due to less restriction and can also be mounted in the intercooler pipes as a blow through to allow blow off valves to be vented into the air! The MAFT also has a full compliment of air fuel tuning controls to allow the addition of larger than stock injectors and tuning without the need for devices like the SAFC. This can do it all for much less money