Ramon Chen

i am looking for buy 991.1 c2s, and i found one with x51 power kit/sc/7 mt, but when i do the test drive, everything works very well but the auto rev-matching does not engaged when i downshift with sport plus mode. I feel very confuse about it, could someone help me about that? And also i have another option to buy, which is 2014 c4s with pdk without sc. Both of them are 25k miles and 70k usd, which one is worth to buy? Both of them are gt-silver. Thank you.

Rennolazine

Early 991.1s (12-13) dont have rev match.