Now driving a BMW :(
AO Platinum Member
Join Date: Sep 2002
Location: West Yorkshire
The boxer layout is more inherently balanced than an inline four, BUT any engine components will benefit from balancing!
If you lighten the flywheel too much, it can lead to the problems you describe, but a small reduction, combined with the balance should be fine. You may have to learn to heel and toe gear change, as the revs will drop away faster when you change gear.