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  #1  
Old 05-05-2009, 05:51 PM
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Mike/HMF Mike/HMF is offline
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Default Yamaha YFZ450R

HMF Optimizer settings 3 / 4.5 / 3.5 / 4 / 4
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  #2  
Old 02-27-2012, 11:13 AM
XCracer228 XCracer228 is offline
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I have my optimizer set up to your specs, and I have to change the plug quite a bit and they are always very black. I have a 2010 x with a comp series slip on, uni filter. Running about 500 ft elevation.
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  #3  
Old 04-09-2012, 08:50 AM
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With air box lid on you may need to back the first three modes down. Try 2 / 3.5 / 2.5
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