Im thinking of making an upgrade to my R56S wngine with forged pistons. Seems that the piston rings are in bad shape (consuming too much oil) so i probably have to open the engine and replace them, but once i do so why not put forged pistons in there. Friends have advised me for those two brands, Mahle and CPS but i have no idea which of the two is best! Any help on this and where from can i get them as cheap as possible?
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