Same here with the adjustment cap. I think that missing cap is a major contributor to the contamination of the motor assembly by allowing so much boost leak.
I was also spraying about that using the nozzle that came with the alky controls kit, but I want to drastically cut the amount sprayed, I know you are spraying 100% meth, but 9GPH converts to just over 567ml a minute, pretty substantial. Most people see better results performance wise with less and spraying less will probably also save our Throttle bodies.
To give an example, I planned out my Port injection project with 6 32ml per min nozzles per port, plus two pre-TB, one just before it and two at the outlet of the Intercooler. All with 32cc nozzles it works out to about half the theoretical flow rate at 9*32= 288ml per min on paper. (1GPH=63.09 * 9 = 567.81 ml per min) Depending on who you talk to and want to believe, our setup doesn't need more than 400ML max, (a little under 7GPH).
I assume that you Dyno tuned your ride with your current setup, do you know if your tune is relying on the meth for extra fuel or just using it for safety and charge cooling? When I had my ride dyno'd they were able to achieve 430/430 with 93 octane and using the meth only for charge cooling and a safety net, however, when the meth really kicked in it would really fatten the fuel up and bog the motor some even some audible break up. Mix was about 70/30 Meth/water.
I also just noticed that you are running a HPFP. I would highly recommend that you experiment with your meth setup to find the sweet spot for flow rate vs returns as You dont really need the extra meth "fuel" unless your pushing for higher numbers.
Do you plan on progressing further on the fuel system? Stronger Low Pressure in tank pump? Bigger DI injectors? The Motor can make way more than the trans can take if you do... kinda why I am sitting at my current power level with no plan to go bigger for the moment, just working on dependability/operation of the meth "safety" system.
I would also ask Mike about hotpipes with bungs at the opposite end of normal (at CAC instead of TB), black powder coated if you think it will help pass inspection. Ecopowerparts.com