Originally Posted by rclife66

Hi, I purchased a RED HOBBYWING XERUN 120A V3 ESC with program box. I downloaded the usb software from falcon sekido. I am running touring car 17.5T blinky mode but after download and firmware update on box and calibration, the motor's rpm is low and sluggish. (at full throttle-- unusually slow) . I have the 511 firmware. Thinking the motor may be the culprit, I changed motors (reedy 17.5T), I still get the same results. I spoke with some at falcon but their efforts didn't remedy the problem. Curiously, i added some boost and turbo just to see if there would show a difference in rpm and it seems to work fine. (POWER). Any ideas what the issue is? I read online that the red esc's were problematic. Is this true?