when my cars in neutral and i rev it i hear a loud high pitch squeal , the only aftermarket thing i have on my car is the cat back but have any of you guy ever experinced this?
that is exactly what is it. Just tighten them. I is probbley the lower belt.
Clutch Fan
Remove it or get a new one, check out the fan removal how-to on 240sx.org
alright thanks guys