Anyone done that? should there be any problems? ferrea valves weight is different vs supertech?
It will work just fine.
The ferrea springs and retainers come with spring seat locators where the supertechs do not.
For the couple extra bucks I'd go ferrea
'15 M235i Performance w/LSD 6MT - His
'15 GTI Autobahn DSG Stage 2 - Hers
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