Nicely done! It's satisfying to set a goal and finally reach it. It seems like once you have the steep learning curve of the first couple years under your belt, you start to plateau and then it gets a lot harder to improve lap times without coaching. Plus, all the variables like ambient temp and track conditions come into play.
Your 330 sounds good. With the way it's set up, do you find it faster around the track than your M3?
TWS looks like it has bumpy sections where sections of road cross each other in the infield. Do you find that a slightly softer setup works better because of that, like using one of the softer EDC settings in your M3?
Dinan suspension, front monoballs, rear toe links / Dinan full exhaust / StopTech ST60 - ST40 / Pagid / Motul / Toyo RR on Forgeline / Schroth QuickFit Pro / Michelin PSS on OEM GTS / Blizzak LM60 on OEM ZCP / Britax carseats / Cheerios / CapriSun / Track rubber scuff marks everywhere / Front end in desperate need of wet sand and respray