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Old 02-06-2018, 08:08 AM   #8
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Join Date: Dec 2012
Location: FL
Posts: 3,904
Originally Posted by Boxstard View Post
DO we know why Koni suggests not to use FSD with lowered spring? I guess M030 or factory sports springs are OK (my SAAB uses OEM Aero springs), but wondering if any issues with H&R on my Boxster like with 30-40mm lowered from stock.
Koni FSD is approved with Eibach Pro Kit lowering springs for Boxster (not made by Eibach for USA anymore but still made for overseas) - I don't have the specs for those springs but if someone could find them and compare to H&R and the other lowering springs, they would probably be very similar and would work.

I personally run the Koni FSD with USA m030 springs so I don't have any info about lowering unfortunately.
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