Hmm..Kieth, you're getting me worried now. My MAF took about 3 months to get here too, and it says "STK" on it. I'll be using an open element w/ it (it doesn't fit w/ the stock airbox). I'm waiting for an open element adaptor, but I'll let you know what happens. I don't see why a stock MAF can handle an open element, but this one can't. My guess is that it's an injector calibration prob. BTW, I'd bypass mm and just send it back to ProM.
