<font size="2" face="Verdana, Arial">Depends on what you want to add to. Since the JR unit adds a lot of hp and not too much mid range torque, a lot of people will tell you to go with the FC as that will help more in that area. Of course, if you bought Jackson unit for the high rpm power, then the FS unit will continue to feed that desire.Originally posted by christofer:
witch one suits beter whith jackson kompressor?