I also ran the chassis for the first time yesterday, unfortunately I'll have to wait until tomorrow to have it timed and see if it's any faster. I didn't find that it made the car any more stuck but I did feel like the steering was more aggressive and the car changed direction better. The difference wasn't night and day though so unless it's much faster on the track tomorrow then I've say it's a nice to have rather than a must have
My testing was on med grip asphalt btw