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Do NOT get an aftermarket MAF sensor... bad bad bad.. Aftermarket MAF sensors do not report true, correct information to the pcm... aftermarket MAF sensor calibrations fool the pcm into thinking the engine is running leaner than it really is, so when trying to tune it and adjust the fueling correctly, it will never really be right/correct, because that aftermarket MAF sensor is not reporting true/accurate info to begin with... They usually cause idle and driveability issues, and plus, the stock GM MAF sensors are good for 600+ hp anyway, so there is no reason at all to change it... So put the stock GM MAF sensor back on...
 
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