To answer my own question for those who may end up on this thread later. After researching a bit, I learned WitchHunter Performance is like 7 miles from my me. Unfortunately they went out of business at the end of 2023.

I saw those ASNU machines several places and wondered if they were all interchangeable services. If you read through Gordan's site (while it is still up - WitchHunter Performance - Injector Cleaning & Flow Testing Services) you can learn a lot about what made them different and I suspect many of the other recommended vendors on this forum. Amongst other things, they modified the ASNU machines:

Code:

"Improved injector drive circuitry, to mimic actual conditions.
Variable injector drive voltage for specialized customer requirements.
Variable pump voltage, for testing at a wider range of pressures."

I have no experience with fuel injectors, so it is quite likely the local places would be perfectly fine for my 28y.o. SUV, but since the price is comparable, I might as well go with the higher end service.

No kidding. What a pain this was - over two months - half of which was spent thinking the car was junk and how sad that made me.

Smart. I'm going to try swapping the injectors after this tankful of Lucas Cleaner is done. Hopefully reusing the fuel gaskets will be fine temporarily.

I emailed MotorWest Performance again, they apologized for missing my previous email and answered all my questions . I'll likely go with them or Advanced Injector (referred by WitchHunter) for the cleaning.