Noisy engine or....?

I've recently changed OEM rollers to Dr pulleys sliders.I can hear some noises from the engine....nothing specific just noise ....like something's loose .Both idling and cruising.Is that normal ?Funny thing is that at the first 200 miles engine was more quiet than with the worn OEM ones

[quote="micbusathens"]I've recently changed OEM rollers to Dr pulleys sliders.I can hear some noises from the engine....nothing specific just noise ....like something's loose.[quote]

I would recheck the installation of your sliders, to ensure installed correctly and have not turned and double check your final torquing on the variator nut.