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What's the point in the bigger FTP lids anyways? The normal lids are 90mm so I'm confused..
i switched bc i had a 90/90 and stock maf and slp lid and the lid fit like ****, so i bought a used ftp lid and i already had a 85mm maf all i needed was the 3 to 5 wire adapter harness.
i never re dyno'd it but i felt the difference
to the OP goodluck at thye track you will love a 4k stall