Eternalx, would you mind posting up pictures of your setup? Also, what size injectors did you go with. I know you said you have yet to test your system yet, I am just curious how you set it up.
What would it take to run the direct port and pre tb injectors in a dual stage setup? I know you can have a meth system tuned to come on at a certain psi of boost, but is there a special valve or switch that I would need to run the seperate injection points dual stage? I am definitely want to run a methanol/water mix pre tb to cool down the iat's, and have been considering the direct port for an added bonus. My car is going to be down for a while and I have all the parts, so I figured might as well take the time for the most ideal setup.
Thanks for your input s2000junky. I dont really want to run 100% meth through the system. I will already be tuning the car on 93, so the non diluted meth might be a bit overkill. I was more considering a 75/25 mix, not high enough to shoot for the moon, but not so low I have to worry about it. If I had everything I wanted, I would be running e85, but there are no local stations that sell it

 

Most go with a 550cc single, so split into four we should be looking anywhere from the 125cc to 150cc range. I'm not sure on what power levels the difference in jets reach though. I'm sure its dependent on fuel, C.R., turbo setup, etc.

 

I run a 550cc single 4" before the TB. I've determined through my own experimentation and reading that injection is a science and an art... like tuning, just with chemical means rather then mechanical. Water % vs meth or running 100% of either -one combust and one doesn't. Nozzle size, location. Single, progressive or multiple stages.... yeah there is no right or wrong way for everyone, only the best way for your particular set up. Once you figure that out and what your trying to achieve, ie; more cooling or more detonation suppressant, power.... when it should inject and how much to achieve this. And like most modifications, there is pros and cons to each set up. I run a progressive controller which works great at matching the boost flow of my Centrifugal SC, but its design lends itself to lesser atomization and lag in injection initially when it is called on. On some set ups like a direct port, this could prove to be disastrous. And since I am still using factory injectors and a moderate amount of boost, running a high % or 100% meth is a must since it acts as a secondary fuel source (water doesn't) and it still acts as my detonation suppressant and cooling the intake charge being pre TB. If I take it to the track, or run hard in the summer heat, I will run about 20-25% water to the mix.

A tip, as long as your not detonating, meth will make more power over water every time. But if your running so much boost that heat control and timing retard is maxed at what meth alone can provide in assistance, then obviously adding water injection at that point would yield more power due to its superior detonation suppressant and cooling effect. But for most of us not reaching that level, running a high % of meth is the way to go. Just my .02

 

I'll be following this thread as well. My intake manifold is sitting beside the motor, b/c I am waiting to decide on what to do so I can drill/tap and install the manifold.

In for more info.

Tid bit of info from Aem's site.

 

EternalX- I saw your setup on page four in the official thread, and I must say that it is very very nice looking. Everything looks very clean, well and organized, but I do still have a few questions. Do you think that the injectors could have been installed farther up the runner (away from the engine) just to help maximize the mix with the air, or was that an ideal location without running into any issues? How far away from the throttle body is your fifth injector located? I assume its post blow off valve, just curious is the distance away from the throttle body makes a vast difference when paired with the direct port. Do you have any recommendations for tapping the manifold itself (since that was the original question from the OP)

That little AEM disclaimer is a bit scary. I wonder if that something to actually be of major concern (assuming everything is installed correctly) or if thats more just to bite the lawyers if someone catches their head on fire

*Edit: Sorry just read the thread again and noticed eternalx said an injector on the cold side near the intercooler will be fine. Guess it doesnt really matter if its pre or post BOV, even during multi gear pulls at WOT?

 

Thanks broke 20.
Idk if its the same for MY00 but the coolant line to the TB prevents me from running the first injector any higher. Also the runners are angled where the injectors are tapped so its kind of spraying against the flow of air which means better atomization.

I dont use a 5th injector in my setup but the further away it is from the TB the better it is for cooling the air.

Minitoyota tapped the mani for me but I believe it was simple drill and tap, the runners walls are about 5mm thick. Welding bungs would be preferred but I didnt feel the need to.

Just pickup a CV from devilsown or coolingmist.

About the pre or post bov if the 5th injector is pre-bov or very close to it you will spray some meth out the bov when it opens after a wot run. It doesnt really matter.. just a slight mess after awhile. However idk if it effects bov performance after some time.

 

Whats a CV?


Once I get my christmas shopping out of the way, I'm going to finish the meth kit.

I looked @ my manifold last night, and I wanted to put my nozzles on the back side so it's a more clean install, and I'm pissed b/c I don't think thats going to happen.

Honda built in some renforcement into runners 2 and 4 if I'm not mistaken, and unless I grind those down, I won't be able to get into there, not to mention the throttle body "box" completely envelopes runner 1, so I would be forced to put the jet way close to the flange, which I wouldn't really want.

Hmmm.

 

Check valve



and yup not many easy options on the stock intake mani.

 

haha, thanks.

I guess I'll be forced to do it on the top side

 

So external, I understand that aiming the jets against the flow of air will increase atomization. But why then do the fuel injectors do the opposite and aim into the flow of intake air rather than against it?

I would think with the devilsown injectors you would want to tap them perpendicular if you wanted any chance of the o-ring creating a good seal.