I believe you are referring to the Zeus by 42% Products. This new item just popped up for discussion around here recently, and I haven't heard feedback from those actually using them yet. I do know that I would recommend moving to a CH ignition circuit for a much lower draw ignition. Running the OEM high draw circuit with a product like this would be scary without a huge battery, which conflicts with the goal all together

http://www.rcuniverse.com/forum/m_92...tm.htm#9254158

ValleyView RC is also selling them:

http://www.valleyviewrc.com/Zeus%20f...20Products.htm