I was cruising, not very fast, on the highway in 6th gear at a low RPM and decided to make a pass without downshifting. I pressed on the gas to pass the slow car and my car just revved to 6500+ RPM without really any acceleration. Felt like the clutch was slipping (similar to the feel of a burnt clutch on a bad launch). I decided to further investigate the problem. It seems to happen when I am any gear below roughly 3000 RPM and I stomp on the gas. The problem has never occurred before and seems to have come on all of the sudden. I can smoothly accelerate through all of the gears without slip if I accelerate hard from the start, but with a regular acceleration from a cruising speed without having to downshift my car revs and sounds like its trying to catch and go but stays in place. I have to accelerate slowly or downshift to accelerate and not have any slipping.

Is this the clutch? What else could it be?

Please help!

Car Specs: 05 STi 6MT 35,000 Daily Driver, no hard racing, never tracked. Every now and then some fun street driving. Mods: Turbo back exhaust, intake, Cobb accessport and protune. Slightly less than 300 WHP. Have not done 30k service yet...

 

sounds like the clutch is starting to go to me

 

Anyone else?

 

I'm with stupid ^^ (NorCalBugEye)