I have a 2 week old Enthusiast 6MT, and I'm out of the break-in period (about 1450 miles). I've noticed that the transmission can seem a little "jumpy" on occassion when up/downshifting, but I had chalked this up to me not driving manual for 5 years. Today I'm driving home from work and hit a bumpy patch of road, and noticed that when I was up the upswing of the bump, my engine would drastically reduce RPMs (from like 3500 to 2000), but then would pick back up again as soon as I "landed" (I wasn't actually getting air..I'm not that insane).

Is this a part of the traction control system/lsd; i.e. because my wheels were losing pressure on the road the car thought I was slipping and decided that I needed less power? Or could this be a sign of a problem? I have not driven an lsd/traction controlled vehicle before so I am clueless. My plan was to try driving with TCS turned off for a few days and see if I still noticed this problem.

 

I notice that same thing sometimes, but I just chalked it up partially to TCS and I also noticed that my foot did not maintain constant pressure on the gas pedal when I hit bumps like that