That's pretty pricey! That is exactly why I have been looking. Is the mxu a carb. set-up? The reason I ask is the conditioners seem to work best on fuel injected engines. I run a VERY rich idle circut to keep from melting the piston on de-accell. I am trying to obtain a hotter spark at low rpm's to keep up w/ the mix. On long de-accell I will almost foul the plug. I found the cap. helped. but I'm not sure about spending 150. on a MAYBE cure. It may help if you knew what I have...'04 ZX/ Super fever, 70cc ported Malossi cast iron jug, partially skirted malossi piston, 2mm shave on a Malossi alum. head, Technigas tuned pipe running NO packing, 27'000 volt Imag ign coil, Sutai custom programed factory race cdi., 27 mm delorto carb. w/ full flow intake, Malossi reed cage, and custom cut Boysen reeds. I also have ALL Malossi cvt parts, w/ straight cut Malossi 8.3-1 gear set. I have an NGK br7hs10 in it right now because I cannot find a replacement in the iridium line that will match the shave on the head. I just need a hotter spark below 5,000 rpm's Any help is appreciated!