has anybody had any problems with underdrive pulleys on 2000 up neons, any reall bad engine vibration. wondering thinking of getting one, also if the one you got didnt come with new belts what size belt with a/c and power steering. thanks

 

The only known problem with UDP's is on 2002 R/T's and ACR's and its just a CEL light above 5000rpm. But actually no problem happening

 

I have an AF/X underdrive pulley on my 2000 Neon and I haven't had any problems out of it. That was the first thing I installed on my car and I didn't feel a difference in anything, not even in power. Their purpose is to free up some horsepower and reduce stress on your engine and aftermarket products, so it will help you in the long run. They say they will give you alittle torque too. They are lighter and smaller in diameter. Like I said, you wont feel a difference.