The 14.4V Hacker is 3600kv. I posted about the losi 1/8 ESC here --->
http://www.rc-monster.com/forum/showthread.php?t=18537
Also make sure you have the latest firmware installed.
6 KiloWatt A123 Racer
GTP-Pletty Big Maxximum+RX8. GTP-C50-6L Hacker+RX8. CRT.5-Pro4+ZTW esc.
24s2p EVG SX 49.6mph Ebike.
18s4p Raptor 60mph Ebike. 11.5KW