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      05-28-2012, 04:44 PM   #21
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Drives: 2015 M4 Coupe
Join Date: May 2012
Location: Winter Park, FL

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Originally Posted by -cj- View Post
Are FMIC upgrades a noticeable upgrade? I know it lowers your BATs, but will that alone improve performance? Or do you need a tune that raises the PSI a bit? (I'm interested in joining this GB, but I'm on the fence about whether this is a noticeable upgrade?)
To take full advantage of a FMIC upgrade, you would need a tune. That said, when installed without a tune, you will still see a noticeable power gain. Cooler air and less restriction will always make more power.
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