In our Audi's we gained 2 seconds a lap a some tracks, while others we didn't notice much difference. I think it completely depends on the car and more importantly the track.

We have 20 years worth of development in the Audi suspension (10 years times 2 cars) yikes we are getting old... with that we are still not experts but we have learned a lot. We originally were going to buy a already tested product but found that not only was it out of our price range at the time but also knowone seemed to agree on the "best" set-up. We went to california and the best known west coast shop built a completely different set up than the best northeastern shop. Totaly different ideas on set-up from swaybars, spring rates, different struts, quaife/no-quaife, etc. In the end we did our own testing and built something different than both lol. One thing though is that we noticed that in the northeast tracks are short and tight while the west coast and in other areas of the contry not so much... did this play into the set-up designs? hummm... maybe everyone was right!

Raymond 'In the northeast, I am a believer in the Quaiffe" Blethen

PS: If you want to learn how to drive with a Quaife, take the racecar Ice Racing.... you will learn a lot!