Originally Posted by DirtyD
For Christ's sake....my head hurt now.
wbt, why did you mention the JLT products? They have been proven to perform, of course with the addition of a tune. I know the stock airbox is a damn good piece on these cars, but can you explain? I'm actually curious.
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I did calibrations for him to test and log stock, Airaid, Steeda, Roush, & the Brand J. No changes except the MAF transfer function between them. That's the only thing that should be changed, anything else and you're band-aiding a hardware problem in the calibration, which I won't do. All performed properly except the Brand J. It had a very noisy MAF signal, and this threw the shifts/locks way off causing the car to hit the limiter. This means the airflow is very non-laminar in comparison to the other products. Jay's response was that the filter wasn't positioned right. It did the same no matter where it was positioned. I commented that the tube should have a raised filter stop to properly locate the filter like every other brand does, Jay told me I didn't know what I was doing and that he would not revise his product. Guess what, he has since made exactly that change. Many others have mentioned not shifting and hitting the limiter, or idle surges, both of which can be caused by noisy MAF signal. Jay denies the existence of all these people and likes to say that only 2 guys in Texas have a problem with his product. So that is why neither of us will use or recommend any product Jay sells. Lately he is on a rant making videos about SHR, guy thinks he invented the aluminum can or something, he appears to be about half nuts.