I see alot of posts on people asking which nozzle size that they should run for there car, but they are all kinda more specfic answers for them and not everyone else. now im curious as in how u come about picking the nozzle size!? is it based on the modifications you have, if your running a dual or single nozzle, or possibly nozzle placement? maybe someone can help clarify this one for me as i am in the market for an hfs6 kit that i want installed in time for the spring and for anyone else that maybe looking for a similar answer as i am

 

Howerton Engineering has a good informational page talking about it and showing flow for both jets and nozzles. Basically people shoot for adding about 20-25% of total primary fuel flow at full flow. So if you are not hitting full IDC don't forget to add that in.

I have 4 780cc inj. so... 4 x 780 = 3120 X .25 = 780CC estimated desired flow of meth at 100% IDC

I only reach about 70%IDC so I need to calculate that in if going for a rough acutal flow.

so 3120 x .7 = 2184 x .25 = 546cc of estimated desired flow at 70% IDC (what I will really flow at peak IDC)

Now you need to look at the flow chart and see what the jets will flow at your given boost pressure. Remeber to subtract the boost pressure from the line pressure, when deciding flow rate of the jet.

Once you figure out flow rate, account for IDC% again because the HFS 3/5/6 series mirror it. If you are at 70% IDC at peak flow the system will also be flowing 70% of its capacity with the given jets.

 

you think you could post the link to this for me and anyone else to go to to figure this out on their own?!

 

I would say definately run a dual nozzle setup, I ran an M14 nozzle with ridiculous results but not safe.

 

yea i plan on running a dual nozzle set up but figured instead of just asking someone to figure out my nozzle size i could learn how to find out for myself and possibly benefit someone else looking to do the same

 

Here you go... http://howertonengineering.com/tech-...ating-jetting/

I have always over jetted some, will all else being said. The more meth you flow the more timing you can run. I ran an quite agressive fuel map for years. I was flowing around 800-900cc from onset of spray. I am now running about 580cc at peak spray. Now that it is colder I am hitting about 31-32psi and found a few light counts of knock. So I am going to add more methanol back in. I am currently running 1 and .8 jets and I am going to change it out to two 1 jets. I want a little more flow and I already have adjusted the gain, so more jetting it is.

 

sounds good and thanks...for my set-up i plan on running a hfs6 kit on my stock ecu and tephra v7. i also plan on getting a omni 4 bar map, a grimspeed 3 port, and either a jack of trades or a buschur map switching harness so i can do alternate maps and run my low boost setting as my failsafe. from my research this should be all i need to do it...feel free to add in if i need something else

 

The current version HFS-3/6 already has a wire dedicated for map switching. All you should need is an ecu pin to hook it up for map switching via the DDS3. I am using my ebc to cut control boost and simply use the boost cut feature of the HFS to cut me to wastegate until the fault is solved. I installed an override switch so I can run high boost with the fault. Once my pins get here I will also use the DDS3 for map switching. I have not ventured into ecu controled boost yet, which I feel would make life easier.

So right now for me... Error happens and cuts me to wastegate... @#!!... I flip a switch, turn down my ebc a little, and then get back on it. I run 28-29 on pump anyway though

No road courses for me on pump!

 

what do u mean by ecu pin and how do i go about getting one? would this still hold true if i wanted to be able to switch between that maps whenever? im doing a tune with meth and one with out and want to switch whenever and not just as a failsafe

 

Yes it will work for whenever. With the gauge on you will run one map and with it off you will run the other. It switches to the alt map when it is off or when there is an error.

Ecu pin info... https://www.evolutionm.net/forums/ec...s-how-tos.html

A post in there mention this for evo8 ecu pins... http://www.mouser.com/ProductDetail/...cjZdHR5Q%3d%3d

 

do you know if there is a how to on aquamists site or on here how to wire it through the dds3 for map switching? i didnt see it when i looked

 

there is one wire that is pink that comes off of the HFS ecu. You wire that directly into the ECU. I know there is a diagram on here...

I cant seem to find the diagram but you take the pink wire, attach the pin and then insert it into the input 42 I believe.

 

like in pin 42 off of the 2nd post in the last link u sent me? and u said by turning off the gauge it would switch to your alt map..u mean like a toggle switch turning on and off the meth system?

 

If you really want some updated information on nozzles I suggest you call Labonte they have excellent customer service and are very experienced. The nozzle size depends on HP.

 

Yes the DDS3 has a power button on its face. When off or error occurs it will switch to the alt map.

The Aquamist kits uses jets and the link I posted for jetting calculations includes both jet size/flow and basic nozzle size/flow as well. I would think that it would be based off more than just Hp. Some use it simply for knock supression others as cheap race gas.