Methanol Injection

blk92suprat

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#1
I have been thinking about adding methanol injection to the Mk3 Supra.

Main reason for doing so is to safely increase boost to 24+psi. Currently run 18psi max on 93 octane. I was thinking about always running 100 octane but obviously over time this would come out to be very pricey.

I'm looking for some insight on what kits you guys may be running. AEM/DevilsOwn/Snow.

Also the best location to mount the meth nozzle. Instructions state 6 inches from throttle body. I currently have my VPC air temp probe in that position.

Whats the best position to mount meth nozzle in relation to where vpc temp sensor probe.
My research thus far is indicating meth injection post vpc temp probe. However research is also suggesting mounting the meth injection to the cold side ic piping that is directly connected to the intercooler. This would be pre vpc temp probe.

So which is the best way to go?
 

suprahero

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#2
I'm not saying mine is best but I have Snow's performance. I run 93 octane with 50/50 boost juice. I also run about 25psi of boost on a 6765. My nozzle is located about sixteen inches from the throttle body. I love methanol injection. Good luck with yours.
 

Zazzn

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#3
I've got a Torque freaks kit I pulled off my car ealier this year, oldie but works fine used it until again last year when I had my car running. Then switched to complete E85. If you dont already have a kit.

Also have a full AEM kit new. PM me if you still looking
 

blk92suprat

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#4
Where are you guys mounting the nozzle in relationship to the air temp sensor?

I appreciate your offer but I'm looking to buy brand new.
 

blk92suprat

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#5
Also curious on the Nitrous Express meth kit...any users here with experience please chime in on your experiences.
 

blk92suprat

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#6
With my current set up I was thinking about placing meth nozzle cold side just after BOV. This way I would have meth injecting about 8 inches before vpc temp probe. (VPC Probe is 6 inches before TB)

What are your thoughts?
 

blk92suprat

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#7
Well I decided on the snow performance stage 2 progressive kit. Also got the safe injection boost relay to cut power to EBC in the event of a meth injection malfunction.
I plan to utilize the oem washer reservoir.

Still undecided on meth nozzle placement. As mentioned above, VPC temp probe is 6" from TB.

Looking for some insight.
 

Zazzn

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#8
Mine was on the TB of my 2jz. I don't think it matters that much where you place it as long as it's higher than the tank. If it's lower sometimes a check valve can leak and you'll flood the pipes, which then hydro locks the engine.

My AEM kit is NIB.
 

suprahero

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#9
This was taken from Snow's Performance website.


14. Where can I mount the nozzle?
• The best placement of the nozzles is in the area around the inlet to the intake manifold or virtually anywhere on the pipe leading from the intercooler to the intake manifold. The nozzles can be placed at any position on the tube, so long as they are pointing at a 90 degree angle to the direction of airflow. The nozzles can be placed in a series or right next to each other. There is enough heat and velocity and flow through the pipe under boost to absorb the water/methanol regardless of the nozzle positions relative to each other.
• Some intakes are pre-drilled for Snow Performance nozzles. As long as all of the airflow into the engine will pass by all nozzles used in the system, even distribution and cooling will result.
• Placement before the intercooler or turbo(s) is not recommended. Cooling is not improved. Never mount an injector nozzle before a turbocharger compressor. Sending fluid through the compressor wheel that spins anywhere from 50,000rpm to 250,000rpm can erode the leading edges of the fine aluminum. Studies performed by SAAB, concluded that pre-turbo injection will over time cause cavitation on the turbo wheel leading edges.
 

blk92suprat

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#11
Yes I have actually read above in the instructions, but I appreciate your posts. It also states you can inject pre or post maf. Of course nothing will discuss vpc temp probe as thats supra specific.

I went with the snow stage 2 progressive kit.

Im still leaning towards injecting right after bov so I will be 8 or 10 inches pre vpc temp probe.

Install is on hold however, as I'm currently under way with a stage 2 A340E build.