I took my Injectors to his shop in Kirkland and had him clean and flow test them. They are the side feeds for the 90-96 300ZX. I gave him 8 and he chose the best 6, ultrasonically cleaned them and flow tested them. One went out after 7k miles. Now I am replacing them all with the newer Deatschwerks Pintle-less Style Injectors for the same price as he charged to stick mine in a cleaning tank and flow test them. For $369 I would have expected them to last longer than 7k miles. I got a Brand new set of new style from Deatschwerks for $379. All in all I could have ordered all Brand New NISMO Injectors and been done with it.
He does provide a Flow chart and whatnot with the return of the Injectors though. Still not worth $369 to Set the Injectors in an Ultrasonic Cleaner(Harbor Freight $50), Apply 12v for actuation Test(Battery and some wires), then Flow Test them. The only thing I don't have a machine for is the Flow Testing of them. Not his fault for the Coil windings being inferior but still pricey to say the least.