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10.18.2007, 11:18 AM
A 10l on 4s is not that high draw of a system. I have my 10l on 4s in a LS10 with a mm running it and it works fine. My truck is reasonably light, what truck are you running this in? I am sure that the 9920 will work fine, especially on 5s. The 10l may be spinning a little fast on 5s, a 9xl would be a better chice, or maybe a 12l. Kv rating somewhere near 2000 is more suited to 5s as it keeps motor rpm near 35k.
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