Hey, picked up a used 12' MCS with 42k on it. Spent some time researching but didn't find so much, at least pertaining to the n18 engine.
On the highway, came to a stop in line for a toll, car was running rough, not a hard misfire, but best way to describe it was that the car felt like it has a loopy performance cam in it. Car revved fine, didn't stall, and no performance lost while driving at any time. No CEL or any other warning lights. When I came to a stop again, no problem at all. Happened today for the first time
Anybody experience this?
This sound like the beginning symptom of HPFP?
Thank you guys

 

'12 S? You might have some original warranty left. My '12 S is covered until November. If you have some left, might want to visit the dealer..