I'm planning to use 50\50 (or less methanol) mix on my 2005 edm evo with evo9 turbo and 272 cams.

AEM recomends to use single injector with 550cc nozzle for up to 450hp applications, mounted about 6 inches from throttle body. But I am thinking about using a tee and two injectors with 315cc nozzles, to get better atomization at lower pressure levels (part-throttle lower boost). One mounted right after intercooler, and another - right after stock bypass\blowoff valve.

If using two nozzles, AEM also recomends to mount two nozzles in close proximity of each other and keep the injection lines from the tee fitting to the nozzles as short as possible. And that cant be done using two injectors in two different remote locations as I'm planning.

How critical are these recomendations from AEM? What do you think about this kind of set-up?


PS I am using stock piping and marked two desired locations as red dots on the illustration.

 

The recommendation regarding minimizing the hose length after the tee fitting really only holds true on the older systems that had the inline check valve and the fact that the tee was after the check valve. The desire was to keep the check valve as close to the injector(s) as possible. If you have a newer kit (easily identified by the black anodized injector body) then it does not apply since the new injectors have a check valve incorporated into each injector body. You can mount them as far apart from each other as your installation can handle. I have updated the instructions accordingly.

I think your twin injector setup as described will work well. Definitely better than a large single injector. You can use two mediums but I would recommend starting off with a a medium and a small then work up to the increased flow only if needed.

 

I have an inline check-valve in my kit and injectors are not anodized, just stainless. Seems that I have to follow recomendation...

If I use small(130)+medium (315) which one should I mount closer to the throttle body?

 

Mount the larger one further from the TB.

 

ok will try this way.

and where should i put the check-valve and Tee?

 

Put the check valve as close to the jet/nozzle as possible. As for the T make it so that the jet/nozzles have equal hose length.

The larger jets on evo's is best place 18in away from the TB.

Evan Smith

 

Thank you. Will do this way.

 

Just a quick question what kit did you purchase? The 1 Gallon or 5 Gallon kit. The 1 Gallon kit only comes with 1 nozzle so if you still need to get the second nozzle. Order part number 30-3012 which will come with another nozzle, 3 jets, a little length of tubing and a tee fitting. Just make sure when you order it ask for the new nozzle kit. Than you will have at least one with the new nozzle with built in check valve. That way you just need to install the one nozzle and than the other with the check valve right before the old nozzle.

But again if you already have all the pieces just listen to the people above.

 

I have a 5 gallon kit. Anyway I think i will purchase two injectors with internal check-valves and get rid of external one and older injectors, but a little bit later...

By the way, I saw at least 3 types of pumps in AEM kits - short one with some kind of solenoid on the pump section and black'n'white sticker, and two longer pumps, one is black with black-silver sticker (seems to be the newest one), and another is silver with colored sticker. All three of them are rated as 150psi. What are the differences between them?

 

All the older 150pumps are shruflo types that where included in the kits. The 250psi pumps are a little longer and have the built in quick connect fittings. We started using them in our systems back in 2008 since they recirculate the fluid in the head of the pump. The shurflo ones did not recirculate and had a pressure cut out switch which results in a pulsation action in fluid flow. Most other kits now use a similar pump.

 

Please cut me a deal to upgrade from the 150 to 250psi pump.