Air Flow sensors and Hot Wire Air Sensors

[David A. Jones]

Hi,
  I was wondering where I may find some info and specs on different
  air flow sensors and/or hot wire air flow sensors...I am looking at 
  putting together and injection system that will not have a MAP sensor
  due to the lack there of a proper manifold...what I am thinking about
  using would be individual throttle bodies for each injector.
  
Thanks,
David Jones
Dallas,TX