When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Can anyone tell me the difference between a PCIII usb and a PCIIIr? Looked on the Power Commander web site but couldn't find any info. Thanks in advance for any info you folks can give me.
I'm not positive but I believe the pcIII r is the older obsolete model the usb is newer. the pcIII usb also can adjust timing. there is also a new epa approved model but I don't know anything about it