I am 99% certain I just installed these. KMH motors obtained and installed them for me, but all indicators tell me this is what I got.
I like them, but they are upgraded over stock.. so.. I don't know.
What I CAN say:
They have been installed for about 200 miles so far. Power is really reasonable. It might be better than I think, it's been raining since I got the car home.
My path of upgrades looks like this:
11mm pump (10mm died, so I upgraded). This offered a noticeable bump.
Kerma tune (Q-loader). Again, a very noticeable bump.
I'd speculate these 2 mods got me to right about 110 hp. The clutch didn't slip for about 2k miles, they it started randomly slipping. With 200k miles, I expected this.
Called the shop, had the VR6 installed and bought the nozzles at the same time. I was going for the Sprint 520s and Keith talked me into the DLCs as supposedly being about the same power at the S520s but less smoke and better mileage due to the better spray pattern. The DLC is, in theory, key to help the nozzles survive the low sulfur fuel. Whatever.. he didn't have to talk me hard for the upgrade as the price was reasonable to bump. I also had the injectors rebuilt by DriveByWire. Again, 200k miles.
The power increase with the nozzles is quite noticeable.
Smoke is also quite increased.
Before I'd get smoke that other people could see a fair bit. But not that I could see. It took a good 9/10th+ throttle input before I could see the smoke. Now, I'd say about a 3/4 maybe less input and I'm smoking pretty hard.
Mileage, so far, has gotten SLIGHTLY better. Keeping in mind it's been rainy but I have been perfectly happy to "ensure the new clutch isn't slipping".
I'm also still awaiting my new tune from Kerma, which I expect another decent power bump and perhaps a little more smoke. I don't know.
I am not sure what's next for me, I suspect a turbo is in my near future. I am in process of building an intercooler sprayer to help kill some of this smoke/get a tiny power bump at 3/4+ throttle.
Regardless.. the answer to the question on the nozzles is: so far so good. I am not exactly your best test case, but this is my experience!