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I'm changing my stock TB and Plenum to an accufab 70mm TB & plenum. I was told I needed to change my stock MAF, is this right? If so any suggestions on size or brand?
 

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No, the stock MAF will work just fine with that combo. The OE MAF's will work fine unless you put a blower on the car, even then it may still be fine. For now you're just fine.
 

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In theory you are correct, but for this application changing out your stock MAF would yield minimal gains at a high cost. When you replace a MAF with a larger one, you have to get the new MAF calibrated for the injectors you have and it wouldn't be a bad idea to spend a little time on a dyno to make sure your air to fuel ratio is correct when it's installed. A MAF problem can make the car run like absolute poopoo and can lead to some serious damage not long down the road.
 
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