I noticed that when I start to accelerate in my 4th and 5th gear my RPM's jump from 3 to 5 and then go back down to a little under 4 and increase from there. It feels like huge turbo lag or like air is coming in too fast. Has anyone experienced this before? Any help would be really appreciated.

 

Clutch slip.

 

Yep.

 

How would I fix this? New clutch? How much would that cost?

 

there are many different types of clutches you can choose from depending on your power and what you are using the car for. Just do a search on the forums, there are tons of threads on clutches.

 

If you don't want to upgrade just replace the clutch that's in your car it will be about $300 if you want to upgrade then it could be from anywhere to $700 to $1300

 

Moved.

Clutch.