I went through these guys to flow test, clean and re-flow test some injectors I might put into my FJ20, I requested a before and after so I could see the difference of what the clean did, they also replaced the pintle bits and o-rings and another rubber that sits near the top of the injector in the price, $25 per injector, extra if you need them to take them out of the fuel rail for you.
The only thing that disappointed me was the fact that they couldn't tell me how many cc/min the injectors are good for! Which to me seems a pretty basic thing, they do however give you details on how fast it flows a certain amount of volume, so from that you can work out the approx cc/min of the injectors based on the pressure they feed them at.
It's $20 per injector if you only want them cleaned and flow tested.
Cheers,
fj910