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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > What you need for Meth?



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      07-06-2017, 07:11 PM   #1
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What you need for Meth?

Looking to run Meth/or water on my car strictly to lower my IAT as safe as possible.

Currently have the JB4.

I could get a good deal on a used meth kit just looking to see what I'd need..

Beside tank, pump, lines, fuel nozzle in CP, & solenoid..

What is an FSB?
What settings to use in JB4?
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      07-06-2017, 07:27 PM   #2
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From what I can remember, you don't need a FSB (fail safe box) anymore because it's built into the JB4 now.

You'll need everything you listed in addition to a line filter and power lines (which should be provided with a used kit).

Is your only mod a JB4? If so, run a very small nozzle like a CM2 for IAT suppression. I'd suggest running Boost Juice (water/Meth mix) in your tank.
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      07-06-2017, 07:49 PM   #3
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Quote:
Originally Posted by PR3CI5N View Post
From what I can remember, you don't need a FSB (fail safe box) anymore because it's built into the JB4 now.

You'll need everything you listed in addition to a line filter and power lines (which should be provided with a used kit).

Is your only mod a JB4? If so, run a very small nozzle like a CM2 for IAT suppression. I'd suggest running Boost Juice (water/Meth mix) in your tank.
No, I am fbo with bef, figured all that mattered was that I have JB4 and can use for integration.

I have a VRSF CP that has 2 meth bung, what would you recommend just the CM2?
Jeff @TopGearSolutions recommended I should get two CM5 nozzles.
I would like a setup with minimal risk as I daily my car 120+ miles a day.
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      07-06-2017, 07:57 PM   #4
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Quote:
Originally Posted by DaZuc View Post
No, I am fbo with bef, figured all that mattered was that I have JB4 and can use for integration.

I have a VRSF CP that has 2 meth bung, what would you recommend just the CM2?
Jeff @TopGearSolutions recommended I should get two CM5 nozzles.
I would like a setup with minimal risk as I daily my car 120+ miles a day.
Since you're FBO, dual CM5's would be a good start. When I had stock turbos, I think I use to run dual CM7's with 100% Meth. Once I got Pure's, I then swapped out one of the CM7 nozzles for a CM10.
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      07-06-2017, 08:18 PM   #5
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As far as the JB4 settings, I always had mine setup to only spray Meth on map 3 but you can also have it spray on all maps or just maps 3, 6 and 7. Since you daily drive your car, you might want to select Meth to only spray on select maps so that you can drive on say map 2 and not worry about Meth flowing until you switch maps and want Meth to flow.

Check out this thread:
http://www.n54tech.com/forums/showthread.php?t=22272
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      07-06-2017, 08:26 PM   #6
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Quote:
Originally Posted by DaZuc View Post
No, I am fbo with bef, figured all that mattered was that I have JB4 and can use for integration.

I have a VRSF CP that has 2 meth bung, what would you recommend just the CM2?
Jeff @TopGearSolutions recommended I should get two CM5 nozzles.
I would like a setup with minimal risk as I daily my car 120+ miles a day.
You need the FSB to work with the JB4 and their meth kit. Without the FSB it won't be able to communicate methanol flow.

Yea if you have a CP that has 2 bungs, TWO CM 5 nozzles is a good place to start on 50/50 mix or even more methanol.

As someone else mentioned the instructions for the methanol kit and settings are on N54 Tech.

For anyone with a JB4, the BMS Meth kit is a no brainer. It's the easiest solution to have everything work seamlessly.
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