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Perrin WMI install PWI-2

Sourskittle

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#1
Started this thread to have a place to dump some pics and stuff. My fairly extensive datazap page had all the pre- water injection info anyone could ever want. I will be posting logs for after the wmi as well to show the difference.

My kit was bought for $200 of craigslist. Its a perrin PWI-2, but was also sold as an aquamist ERL. Its a fairly older kit, but from what I've read, not too many current kits are better ( AEM's new kit and alcoy injection . Com is prob better ).

Anyway. Gonna do some install pics and try to give some info. Hope others will have an easier time by me posting this stuff.

I'm going to run it off the Map sensor.

My kit uses a "nozzle holder" from aquamist. The sources I found were too expensive for my taste ( reasonable with high high shipping or low shipping for an expensive fitting ). They use an extremely fine thread M8x.075 thread for the nozzles. This is mostly done to force you to buy their nozzle holder. Mostly out of contempt, and because I may add a second nozzle later, I found a tap online and ordered it from China for $8. One nozzle was gonna cost me like $18. I then spent $4.50 at ace hardware for 1/8npt barbed fittings (2). I took the barb off, drilled the fitting, shortened it, tapped it, and this what I got.

The fitting serves as an adaptor so you swap injectors out freely without wearing your charge tube out. Injectors are F-ing $25 a piece btw.

Anyway.... I tested the nozzle's spray pattern in the shop on the bench to ensure the the nozzle being shrouded by the adapter would not cause interference. I don't think aquamist adaptors are shrouded. Devil's own's best nozzles are purposely shrouded. I believe they do this to help keep the boost air from messing with the nozzle before it really gets away from the injector. So I copied it.
(Insert video's link here when you upload them)

I did this in 29min ( I know this because my break at work is 30min, which included me walking to/from the car.

Mark the tube before removing it from the car.


This is a whole. No going back now !! Lol.


Starter tap, make sure its centered in all directions.


Red lock tight, get ya sum


Magic legs.


This shows the adaptor does not really get in the way of moving air.


Top view without injector in.

More to come :)
 


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#2
this is where I mounted mine, I am also going to try the cold side of the intercooler outlet to see if it makes a difference. I think where you and I have mounted it is still to close to the temp sensor and not getting time to atomise for the sensor to read a drop in temp. will be good to see what results you yield compared to my attempt.

ps I used a 250cc injector what size you trying?
 


OP
Sourskittle

Sourskittle

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Thread Starter #3
This injector is rated at 320cc at 30psi it something. My system does not run the really high pressures the newer ones do. I think its a 100psi system. Its really more about progressive flow at 100psi vs newer systems that ramp up pressure. This is a different style kit than the surflo type pumps everyone else uses. Its supposed to the end-all to "progressive". Me personally... I don't really give a crap. It was $200 nearly complete ( missing 1 nozzle that is bigger and the nozzle holder ) and came with a 2.5gal snow performance tank ( which was not included in its $600 retail price when it was new). This pump is wicked quiet.

I'm also not going hardcore on relying on the wmi system to get me bye. I run E40 most the time, so its more about taking a bit of load off the fuel system, charge temp cooling, and a major reason is intake/port cleaning. I really would have been happy with an old school hobbs pressure switch and nitrous fuel fogger nozzle for $200 complete.

The AEM kit is NO DOUBT what I'd buy now if i was in the $400++ market.
 


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Sourskittle

Sourskittle

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Thread Starter #4

Changed my mind about the lock-tight.
Switched to epoxy. 30psi is a Botch.
 


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#5
Your right as i refuse to run a tune that depends on meth to keep things safe. I also want is as a small octane boost with cooler temps and clean intake valves
 


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#6
Interested to see charge temps from this location. I am still waiting for my AEM kit from local backorder. Everything I could find said the best place to mount the nozzle is within 12" of the TB or even better if you could direct inject it to the intake. I am assuming these locations require a tune to fully optomize and I totally understand the reasoning for your choice of location relative to the temp sensor. It would be great to run WMI without fear of leaing out the engine when meth runs out.

My assumption only about the other locations is the velocity in which the air is moving in those locations allows for good atomizations.
 


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Sourskittle

Sourskittle

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Thread Starter #7
Location wise, to generalize a huge topic, further away give it more time to evaporate/increase cooling/better atomization/charge temp sensor sees it. Closer to the ports: better knock reduction because the modules are big going into the cylinder, it actually pulls the heat out of the cylinder rather than the air traveling into the motor, which gives lower egt's and suppresses knock better.

Like I said, later on, i'm likely to add a 2nd nozzle right before the TB.

Update. Used the sound symposer to run my controller harness through ( wow... I hated that thing so much, now I'm glad it WAS there ).

Straitifed gave me an idea about getting fluid to the pump, its pretty lazy,'but I don't care, lol.

I still have to tap the map or maf sensor. I think I'm actually going to use thr MaF because the way the boost goes almost instantly to 20psi, there is not much "progression" to be had. The MAF on the other hand climbs pretty seemlessly and only moves a small amount from 5000rpm to red line. Where as on my car its instant 20psi building to 27.5-28psi, the falling to 22-23psi. That means the lowest "full spray" boost number I could have would be 22psi. So... I'd be at full spray at 20psi (3,000rpm) and the same "full spray" at 6,800rpm. That's not the way its supposed to work.

On the other hand... My mass air pound per min ( PPM ) increases at a steady rate across the rpm band, and its about the same from 5000-6800rpm. Meaning I could make the system VERY progressive and run a larger SET of injectors without getting too much injection down low.

Right now it needs. Ground ( one bolt ), 5A switched power, and the maf/map source and its done...
 


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#8
also worth noting the closer you mount the jet to the cylinders the more chance of an uneven spread across them.
 


OP
Sourskittle

Sourskittle

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Thread Starter #11

Tap this wire for map signal




Straified special install, lol.


Hard to find a ground.




But da pump !!


Nozzle up !!
 


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Sourskittle

Sourskittle

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Thread Starter #12
Some of the stuff ( most of it ) is pretty temporary. When the 2J race intake goes in, it leaves a nice spot for a 2.5gap tank that I have :)

Performance impressions so far ? I'm pretty not impressed, lol. But... #1 no doubt about it, the nozzle is too small.
#2 I'm not using methanol yet ( actually using 50%water and 50% E85 because.... That's what I have ).

I have done some testing and the results are.... I'm not impressed, lol. But I think it will get better with meth and a bigger nozzle. At this nozzles rate, the stock washer tank ( little over a gallon ) will last me till Summer. I've been trying to use it up and I've barely sucked done enough to drop it out of the top of the washer tank neck. But as always, I'll keep everyone updated :)
 


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Sourskittle

Sourskittle

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Yes sir. I'm actually pretty happy with the controller and its tunable, progressive nature. But right now... I'm bring everything it has very early and leaving it on full blast all the way through. Because the nozzle is too dang small, there is not much reason to make it "progressive". I'm also hoping its cleaning the intake tract up nicely before I switch to mostly meth.

I'm using the 0.7 nozzle. I want to switch to a 1.2 nozzle, and if that isn't enough, i'll run two, lol. But then the progressive tuning will really be put to the test.

When bench tested, it looked like a lot of fluid, but maybe not so much for an engine on 27psi, lol.
 


Sekred

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#15
Yes sir. I'm actually pretty happy with the controller and its tunable, progressive nature. But right now... I'm bring everything it has very early and leaving it on full blast all the way through. Because the nozzle is too dang small, there is not much reason to make it "progressive". I'm also hoping its cleaning the intake tract up nicely before I switch to mostly meth.

I'm using the 0.7 nozzle. I want to switch to a 1.2 nozzle, and if that isn't enough, i'll run two, lol. But then the progressive tuning will really be put to the test.

When bench tested, it looked like a lot of fluid, but maybe not so much for an engine on 27psi, lol.
Cheers for the info.
Never payed with WMI myself so interested in where this goes but it looks like you don't need any more boost.
 


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Sourskittle

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Thread Starter #16
I like 27.5-28psi but its been hot here ( 88 degrees today, its Winter for us in the US, lol ). But Florida is normally warm. We get like 8-10 weeks of winter, lol. But 88 is still pretty warm. To compare to some of my better V-dyno's that were done at 45-55degrees is kinda tough and I'm working on a new revision to the cyborg as well, so lots of variables to just look at power output. But I'm disappointed in how its not really effecting charge temps, but that could be that the nozzle is RIGHT NEXT TO THE SENSOR, but IDK. When I switch to meth, I'll have some better idea of how its working.

Russ wants me to run 93oct and meth to see if it can match my E30-E45 tunes, but.... I don't even have a 93oct tune AT ALL, lol. When I run 93oct,' its just a cobb ots tune and I drive all slow until I get more E85, lol
 


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Sourskittle

Sourskittle

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Thread Starter #17
I ordered a bigger nozzle ( almost twice as big 1.2 vs .7 ) and well see how that goes when I get it in :)
 


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#18
If I am not mistaken all the WM kits i have seen stated the pump to be a gravity primed pump. In your current location there will be some lag time between when it actually starts spraying or even false sprays. I understand you are not tuning for spray, but if you were depending on the meth to keep your tune in check you might have a problem. The pump should be located below your supply tank.
 


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Sourskittle

Sourskittle

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Thread Starter #19
Thanx for trying to help :)
But actually, this is a different style pump than the typical surflo type pumps everyone else uses. Its way smaller, quieter, and its supposed to be more progressive and not surge like all the other pumps in the past 10 years. The new AEM system points out that its a big deal it DOES NOT have the same switch like all other surflo pumps of the past.

Its also capable of syphoning instead of just gravity feed like old surflo pumps.

I think cost was the main reason this type of pump never took off when this kit was new around 2005. It was like $600-$700 without a tank.

My srt4 used a gravity feed only devils own kit.

I actually tested this with a 1 gal milk jug before installing it and it did take a couple second to prime, but once it primed, it stay'd primed :)
 


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#20
Thanx for trying to help :)
But actually, this is a different style pump than the typical surflo type pumps everyone else uses. Its way smaller, quieter, and its supposed to be more progressive and not surge like all the other pumps in the past 10 years. The new AEM system points out that its a big deal it DOES NOT have the same switch like all other surflo pumps of the past.

Its also capable of syphoning instead of just gravity feed like old surflo pumps.

I think cost was the main reason this type of pump never took off when this kit was new around 2005. It was like $600-$700 without a tank.

My srt4 used a gravity feed only devils own kit.

I actually tested this with a 1 gal milk jug before installing it and it did take a couple second to prime, but once it primed, it stay'd primed :)
Good to hear you tested prior for proper operation. I have not seen any siphoning pumps in my trolling the internet. It would make it much easier to mount in this fashion. I'll have to rethink my pump choice. Damn.
 


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