[quote name='ibby' post='683591' date='Jul 29 2009, 12:24 AM'][quote name='Asi' post='683372' date='Jul 27 2009, 01:37 PM']i meant as if it needs replaced then lightweight would be better as its cheaper than a dual mass one sorry for being confusing.[/quote]
But a lighter flywheel would have other impacts as well

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I had a customer with a 97 Civic Vti once who needed a clutch fitting & he supplied me a very light weight (racing) flywheel at the same time, made by Fidenza IIRR. After fitting he complained that the car lost torque (Civic's don't have much to start with) & suffered erratic idle & stalling issues.
As a result daily driving became a chore for him although it was O.K for high RPM spirited A road driving. Luckly I saved the old flywheel.....