I had a new clutch replaced about 7000 km ago from the mitsu dealership. I recently cleaned out my MAF because the car wasn't driving right. After awhile I noticed my rpm raise about 500-600 rpm and dropping during a WOT pull. Example, in 4th around 4000rpm I lean into the pedal and when boost comes in the rpm will go to 4600ish then drop back to 4300ish and pull hard as hell. During this the car still accelerates just not as hard as when it drops down. This happens at 3-4k, 4-5k, 5-6k etc etc. My question is, is my clutch starting to go out after 7000 km or could it be my tune acting up?

2014 Evo X GSR(133xxx KM)
Grimmspeed EBCS
Cobb Stage 1
Unknown TP
CB Exhaust
ETS intake
HKS Wastegate

My apologies if this is in the wrong thread, I'm fairly new to forums.

 

Yep, sounds like clutch is slipping. Any idea of what Satan did? What clutch did they put in it? Did they just change the clutch? Did they change the flywheel or at least have it resurfaced?

I would be going back and getting them to look at it.

 

Did you break in the clutch?