I would like to know which nozzle is the right one to use, right now i have a M3 nozzle pre throttle body, been fine BUT

is this the right size? I have been reading and so far it seems it's not

the pump is set at 200 psi@ 12v but my car goes to 13+volts so the pump should be around 220psi right?

ok 220 psi pump m3 nozzle flows @ 4.4gph x 63 = 277cc
my car is set at 14 psi and has 396hp

I think if I run just straight water the nozzle would be fine for just adding a safety margin help with detonation BUT

now i added about 70% methanol (got it for free) and 30% water and I'm wondering what should my nozzle be?

my car is now very rich in high rpms

I have a M7 and M12 nozzle available with me should i put the M7? or leave the M3?

any info or guidance

 

IF you are rich in high rpms, adding more fuel won't help. Tuning it out won't help unless you plan on staying with the mix. How about reducing the mix down to 25% or lower so that your lambda is less effected? 12-15% methanol is supposed to be the break even point for water/meth. Water slows down burn, methanol speeds it up. You should be able to step up to the m7 if you ran an M3 with just water. Meaning 30% of the m7 would would only be 2.1 gph of water (assuming the same pressure from the pump. I know it would be higher, but the nozzle ratings are at the same pressure). The car should have no problem drinking as much meth as you can put in assuming you take out the correct amount of other fuel, it's the water that you have to worry about.

 

ok, installed the m7 but still did not get a chance to try it out.

I can get the methanol for free @ friend

I think I will switch to a 40 meth and 60 water?

and can I damaged the engine by adding to much water?

and are you saying if i run straight water the M7 would be way to big?

 

I don't know how much water you can run. I was simply extrapolating from the information you gave already. If you get free methanol, and don't see it running out any time soon, then play around and see what you can get as far as power and mixes that work.

 

ok a little update, tested the M7 nozzle and it works. at first i tought I had ignition but after a little tune it went away. @14psi right now

so now this is post turbo nozzle location in the intake elbow very close to the throttle body, now I want to add another nozzle preturbo!

soon want to go 20 psi, so I would leave the M7 nozzle post turbo and add a m7 preturbo?? or what size shoudl i run??

and should i run a progressive controller ?? by running the progressive controlller from devilsown , it regulates the pump so by doing that both nozzle will be progressive.

any help guys?

 

Most companies will tell you to stay at or below a 2gph nozzle for preturbo. Also, if you are using the preturbo nozzle with the progressive pump, you will want a solenoid to stop the flow. You should also think about using a hobbs switch to control the solenoid and make sure that your pump is going pretty well before the pre-turbo nozzle kicks in.

 

ok so I have a mac selonoid here, put it with a checkvalve for the preturbo nozzle and activate the preturbo @14 psi when the pump is at 100 %

The post turbo nozzle I would like to progressivly built up the flow from 7psi slowly to 14 psi , so when it reaches 14psi the pump is at 100%

A M5 nozzle flow about 380cc is I remember correctly, that should be enough for 20 psi max?

I also have the post turbo M7 nozzle or should I put a M10?

What do you think?

 

You would have to ask someone else about the flow requirements. I am using a .75 and 1 gph nozzle in my setup. I don' know what flow you would need for the big one. As long as you are up to full pressure, I wouldn't worry about what % the controller is at. I used an oil pressure gauge to make sure I had 100 psi (140 psi from the pump) before my pre-turbo nozzle activated. No really factual reason behind it, just that it gives enough leeway on coming on and turning off to keep unpressurized dribbles out of the turbo.