Just a quick question....does having one of these mean that I no longer have to get a chip? It may be a dumb question but I was planning to get a chip until I started reading all of the posts about the predator. Is there an adjustment that can be made with this in the event that I want to get a smaller blower pully? I want to get one now but with 5 kids it's kind of hard to buy ANYTHING for me! Thanks in advance.