At COTA, same day, there are two E46 M3s. Similar mods, similar weight, same NT01s, same brake pads, one has a $4k+ KW comp setup, the other has the TCK D/A. The TCK car does have a rear BBK and some mild Dinan software. The drivers are VERY close when it comes to skill. Neither car was corner balanced. Both cars aligned on the same machine by the same guy. These cars are pretty much twins...even the same color
The TC Kline car's best lap was about 3 seconds faster...just sayin'...and the TC Kline car is far more comfortable as well.
AND I PREACH..AMEN MY BROTHA'S TO THE HOLY SUSPENSION GOD...TC KLINE! Seriously, the results speak for themselves if you ask me.
2015 F34 328iX GT Glacier Silver
2011 E90 M3 Monte Carlo Blue
2004 E46 M3 Imola Red