ATVR: What kind of fuel do you recommend running and why?
LD: On engines that have 10:1 or less compression, we think high-octane pump fuel is just fine. With ratios of 11:1 a blend of 50/50 pump and race fuel and then with 12:1 and higher should run straight race fuel. We look at your engine as an athlete. The better food you feed it, the more reliable it is. Race fuel doesn't give you more power, but it does allow your engine to run cooler, more consistently and makes tuning that much easier. We steer clear of aviation fuels because they tend to make engines run hotter and are formulated for running at high altitudes where oxygen levels are low.
ATVR: For many people, the stock power of their machine is plenty. But what do you recommend for those who want that little extra edge?
LD: I recommend putting on high-quality components: exhausts, camshafts, air filter kits, etc. More and more people are getting taken advantage of by getting cheap imitations of poorly made products that are sold without any tech support. These items usually don't fit properly, perform poorly and break down more than ever before. Find an established company with a good track record and try to do all of your performance work in one place. When you mix and match parts, it's very difficult to get quality tech support.
ATVR: These are all great tips. Finally, what are the top five absolute must-do's before taking your quad out to the dunes?
LD: First, make sure your machine starts, idles and runs well and check to make sure the brakes work. Second, make sure that all the fluids are topped off: fuel, oil, coolant, brake fluid, etc. Third, check that the tires have air and can hold air. Fourth, make sure you have your whip and current registration. Fifth, finally make sure that your head and tailights work properly.
ATVR: Thank you again, Loren. I'm sure our readers will appreciate every word of this advice.