Just figured maybe someone could help. I have this awful buzzing sound that comes from the exhaust I think. It always comes between 3100 and 3300 rpm's. I think it might be the cat. But it only occurs while im driving. I put it on the lift and me my buddy tried to pinpoint the buzzing while i revved the engine up to 3 grand, and while i stuck it in 5th and took it to 3 grand. But there was absolutely no sound. Only while I drive can I hear it.

Here is another question. I installed an Exedy Stage 1 clutch about 10000 miles ago. Me and my buddies we were out in the Black Forest doing some intense driving, and the whole time my cltuch was performing flawlessly, grabbing hard and immediately. Then, the next day I drove my car, I stalled out. The clutch wouldn't engage till it was all the way to the top of its pedal travel. And it disengages when I just tap on the cltuch pedal. It still grabs hard when I push the car hard, but when I'm just tooling around town, you can barely tell that its engaging. I think it might be just getting old and I need a new one. But the change was so sudden.