looking at a used MY' 17 392 T/A. After agreeing to purchase the car I found it has MDS; being a manual car I wasn't expecting this. Dealer put Cylinder Deactivation on quote and I'm wondering if that was a typo as I believe MDS is NOT available on a manual car correct? I'll never take the car to the track, its a weekend toy, so the question is does MDS affect performance at all? What about exhaust tone? I'm also going to put a Comp Cam 274 in it and didn't know IF MDS will affect that either. What are your thoughts on MDS in this situation?