Insane Miata Motorsports now offers cleaned, flow tested and calibrated injectors. These injectors also get spray tested, efficiency tested and they get new O rings.
For motorsport applications, you definately want to have cleaned and tested injectors. For street driving, it's a very good idea to perform this service on your injectors since most likely they are 20+ years old already. It will significantly improve your efficiency and gas mileage.
 
Two options available:
Send your dirty injectors for cleaning/testing. Please inspect them for cracks before sending (cranked injectors need to be replaced). Also, please send all the O rings and spacers.
We will send you a cleaned, tested and calibrated set. This option is $40 - $60 extra. As supplies last.
When selecting "IMM supplied injectors" you don't have to send your injectors to us.