[RPM427]

For a car with street tires, you will see an improvement with the aluminum flywheel. If you have a high horsepower car on slicks, you will also see an improvement. You will not see an improvement on a near stock car running on slicks or sticky drag radials. The car will bog on the luanch.

As for regular driving, it will problably help you, although you will need to give it a bit of gas if you are going up and down hills.

Your revs will also drop quicker when you shift, which will reqiure more heel-toe downshifting and rev matched shifts for the guy concerened with every tenth around the road course.