[lincpimp]

I have compared 3s to 4s systems in the same truck, both geared to do the same top speed. I found that the 10l running 4s was much better than the 10l running 3s. It is spinning around 36k on 4s versus 27k on 3s. Plus I was able to run a 14tooth pinion rather than a 20 tooth pinion. On 4s it felt like a comletely different system, more power, cooler running, and better driveability. If you have 2 packs, try the 10l, you will love it. I promise!!!