Unless your flywheel is knacked from previous clutch id leave it.
If your wanting high hp figures and are at the limit of tuning looking for various options to get that little bit extra then go for it but the standard one will provide the intertia for tourqe and thats what counts to what you feel shoving you along the road.
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1998 ford st24, 186hp 2.5 v6- sold
1997 bmw e36 318ti, mint hellrot red- sold
1992 celica gt4 st185- td04 340hp/330lbs
1998 mercedes E280- sold
1998 pug 1.9 td- mile muncher!
1993 rx7 542hp savage monster!!
2007 BMW 335i- in the shop gettin built!!