Are you talking about chatter or wheel hop? I have the 910 VDS setup in my car and it does chatter a little, mostly due to my stock gears. I would go with a heavier flywheel and a lower gear in the rear.

 

The light flywheel doesn't help at all.I'm guessing you mean chatter,not wheel hop.Wheel hop will mean your rear suspension is not right.

 

First, I havent had a chance to take the clutch to the track since I am just at 500 miles with it. I have no worries that it will hold a 5k dump on ET's squeezing out of the hole but I simply cannot stand this setup on the street. No matter how gently I try and slip it in first I get terrible wheel hop. Dumping it of course makes it worse. The setup includes a Fidanza, Mcleod Master, 402/910 all balanced. I know RAM states that this is a "track only" disk but damn this disk was their cure for the fusing problems with their 6130. I hoped it would get better after 500 miles but I just dont see it. I am thinking of swapping it out for a 6130 and take my chances with that disk. People dont seem to be having problems with it anymore.

 

02 - was the Fidanza surfaced on a grinder? They do not do this from the factory, claiming they are 'lazer flat' and do not need it. Fact is, a disc like 900 series DOES need it in order to seat properly. In many cases they just slip if the flywheel is not surfaced. I bet either its that or the flywheel has runout...