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2Addicts | BMW 2-Series forum Technical Topics N55 (M235i) Engine, Transmission, Exhaust, Tuning Installed Snow Meth Kit w/ BM3 - Stage 2.5 kit

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      06-26-2019, 02:20 PM   #1
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Installed Snow Meth Kit w/ BM3 - Stage 2.5 kit

This weekend I installed the Snow Performance methanol injection kit Stage 2.5 with braided lines and the upgraded 2.5g tank. I am currently running the Bootmod3 Stage 2 e30 (agg) map, DP, intercooler, CP, intake. I use 93 octane fuel w/ e85. My meth/water content is 45meth/55water and I am stoked with the results! I am currently using nozzle #4 (225 ml/min I think) and will run 100% meth with a custom tune soon. Will follow up on that. I start spray at 8 and go to 16psi for full spray. I hit 18 PSI on OTS map. I use distilled water and VP racing M1 fuel.

I feel a substantial performance increase, especially as I pull through the gears. The OTS map does handle it well at the limits I mention above! Not sure I want to push it anymore until the custom map is built with Carythelabelguy.

For my boost read I tapped into the hose connecting the two chargepipe pieces after the intercooler. I used the "ATP-FTG-010 FTG-QuickTap-CompHSG" into the silicone hose. Used a reducer adapter after that hose connection to transition into the thinner provided hose from Snow.

The tank is a "stealth install". Had to move the ecu that was sitting in the cubby. I drilled through the frame to run the line from the tank to the pump I let. I used the engine bay insulation as a padding underneath the tank to raise it above the pump inlet. I double-sided taped the pump onto the wall. Insulation was added around the pump to reduce vibration and ensure the pump doesnt fall or come loose. The solenoid is required for trunk install and is jammed in there.


ENJOY AND COMMENTS. Doesn't look the best but works amazing.
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      06-26-2019, 05:30 PM   #2
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Awesome job man, I basically have the same setup with the bms kit and the 1 gallon tank.

I think I'm going to buy that 2.5 gallon tank and swap mine out though. 2.5 would be way better
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      06-26-2019, 06:24 PM   #3
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Quote:
Originally Posted by jmwilson125 View Post
Awesome job man, I basically have the same setup with the bms kit and the 1 gallon tank.

I think I'm going to buy that 2.5 gallon tank and swap mine out though. 2.5 would be way better
Thanks bro! I'd definitely suggest the 2.5... I put 1 gallon in and it hit my low fuel sensor in 1 day LOL. Let me know how you purge the system of liquid and do the transition!

Im pushing the car way less now, to avoid spraying and wasting meth. Plus when I push it's more power and cleaner! What a mod..
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      06-26-2019, 07:34 PM   #4
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Quote:
Originally Posted by jdag001 View Post
Thanks bro! I'd definitely suggest the 2.5... I put 1 gallon in and it hit my low fuel sensor in 1 day LOL. Let me know how you purge the system of liquid and do the transition!

Im pushing the car way less now, to avoid spraying and wasting meth. Plus when I push it's more power and cleaner! What a mod..
Did you have to take the styrofoam out of the well where the tank was? And that plastic surround piece?

I used a cheap harbor freight transfer pump to drain most of the tank when I take it out.
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      06-26-2019, 11:23 PM   #5
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Quote:
Originally Posted by jmwilson125 View Post
Did you have to take the styrofoam out of the well where the tank was? And that plastic surround piece?

I used a cheap harbor freight transfer pump to drain most of the tank when I take it out.
Yeah I removed the styrofoam that was holding the suspension ECU maybe? I lodged that unit on the wall. Then filled the area with insulation and bubble wrap.

Cool not bad
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      06-26-2019, 11:39 PM   #6
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So follow up on performance... seems like OTS e30 map cannot support meth. The only benefit I notice is from the IAT difference. The fuel scalar is too drastic on this map.

I'm going to 93oct with more aggressive meth on the racegas OTS map. Probably gonna do 60meth/40water.

Suggestions?
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      06-27-2019, 01:17 AM   #7
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What issue are you seeing with the E30 map? Curious as I am also running the E30 map with a Torqbyte controller with a 50/50 mix and DO7 nozzle.

With just an OTS map I wouldn't expect any drastic performance increase but it does keep IATs lower.
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      06-27-2019, 07:16 AM   #8
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Quote:
Originally Posted by M235SDCA View Post
What issue are you seeing with the E30 map? Curious as I am also running the E30 map with a Torqbyte controller with a 50/50 mix and DO7 nozzle.

With just an OTS map I wouldn't expect any drastic performance increase but it does keep IATs lower.
I was under the intention that the higher octane will provide some power. The e30 map has a fuel scalar that is larger than the racegas map, BM3 told me... so theoretically when my meth kicks in, my fuel system cuts back more than usual due to the drastic scalar. The race map doesn't vary fueling as much? I'm waiting on an empty tank so I can run 93 gas with 60/40 mix.

I raced my friend before the meth. Same car same mods, both on e30. Usually a dead tie. I race him last night with meth injection. Dead tie or inching on him, but now he is on a 93 oct OTS and I'm e30 with WMI. Doesn't make sense.
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      06-27-2019, 08:02 AM   #9
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Well what BM3 said makes sense since ethanol has less energy than gasoline, so you need more of it. When the meth is spraying the DME would have to cut back a higher amount to achieve the desired AFR. Do you have any logs so you can see what your fuel trims are doing and if everything else looks OK?

My experience with meth is that it takes a bit of time to get it right. Unless you add boost with an external boost controller like a JB4 or custom map you won't see a power increase, unless your IATs were going really high before. Meth definitely helps here. If you go with a custom map for the meth you will certainly want some kind of fail safe to cut the boost if the meth stops flowing.
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      06-27-2019, 11:21 AM   #10
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To maximize methanol, you need to add boost and ignition timing. OTS maps will not be the best performing maps for this kind of setup. The pump and the lines near those electronics is a bit of a concern. After dabbling with methanol in various platforms, leaks are possible - you don't want it anywhere near an area where it can drip onto other valuable electronics. It may be fine as is but I felt compelled to at least mention it.
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      06-28-2019, 01:21 AM   #11
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Congrats! I recommend a custom map to take full advantage of methanol injection
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      06-28-2019, 08:14 AM   #12
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Currently burning through my 50/50 meth water in order to start the tuning process with Carythelabelguy. I guess only time Ill say, why'd I get the larger tank.... thanks for positive affirmation.

Would love a fail-safe/dynamic tune using BM3 that would compensate in timing and fueling.... having to reflash to a slower OTS when meth runs out is a pain.
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      07-01-2019, 04:07 AM   #13
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awesome job man if possible can you send pics of where the line goes through the firewall
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      07-02-2019, 10:07 AM   #14
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Quote:
Originally Posted by ChristosD View Post
awesome job man if possible can you send pics of where the line goes through the firewall
So attached are some photos from google for reference. Pretty much i tucked the hose line inside the back seat edges. I tucked all along the edge crease until i reach the back. At that point you curve up. running the same line. Once it is in deep enough, the line wont be turning so drastically. You should slightly pull back the driver side rear seat side back panel (GREEN) to get the line behind that panel . From there just run it as far into the paneling and trunk trim you can go. You don't want the line touching the actual seat back that moves.

Just tuck in the hose with a tool or by hand little by little. Sketchy at first but it is safe IMO. once fully inserted it is squared away. There is alot of free room once you get passed the paneling edge/crease. I also get the hose under the insulation on the door panel up to the engine bay.
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      07-02-2019, 07:04 PM   #15
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Very Cool! I look forward to your results after you get a proper tune for your setup. I'm doing a similar setup, but already have a tune with a few more psi and timing that should work well with m meth/water injection setup. But for now, I am just going to dial it in to decrease IAT's which is why I am losing power.
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      07-03-2019, 09:57 AM   #16
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Seems a bit frightening to have fluid filled pump and lines right in proximity of the battery and open electrical boxes all under an enclosed panel. I doubt fire would be an issue, but it you spring a leak and that fluid sprays around gets into those open fuse boxes and harnesses.....yikes.
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      07-03-2019, 10:04 AM   #17
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Quote:
Originally Posted by XutvJet View Post
Seems a bit frightening to have fluid filled pump and lines right in proximity of the battery and open electrical boxes all under an enclosed panel. I doubt fire would be an issue, but it you spring a leak and that fluid sprays around gets into those open fuse boxes and harnesses.....yikes.
yeah, i mean i sealed everything and braided lines gives me a lower % chance but yeah i hear that.... I should probably install a plastic box of some sort on top or surrounding the high pressure solenoid and pump.... maybe remount the red fuse box somewhere else

maybe just more insulation everywhere lol it isnt the prettiest of jobs but sure works
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      07-04-2019, 01:42 AM   #18
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Quote:
Originally Posted by XutvJet View Post
Seems a bit frightening to have fluid filled pump and lines right in proximity of the battery and open electrical boxes all under an enclosed panel. I doubt fire would be an issue, but it you spring a leak and that fluid sprays around gets into those open fuse boxes and harnesses.....yikes.
Have to say I mounted mine here as well after looking all over for a place to put the pump. 2 series doesn't exactly have lots of space to mount extra stuff like this. My lines are the quick connect nylon - looks like you used braided with AN connectors?

Even so if there were a leak there is only the battery and a 12v junction box with fusible links. No electronics. With only 12 volts there isn't much to worry about.
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      07-09-2019, 02:22 PM   #19
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I have basically the same setup, I was thinking I might just loosely wrap some plastic around each connection of the pump.

That way if it ever did leak it wouldn't shoot out and hit the battery. It would get stopped by the wrapping and just leak to the bottom of the well.

Not an ideal setup, but would prevent a high pressure spray over the fused and battery potentially.
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      07-14-2019, 09:43 PM   #20
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Very curious as to how much performance increase can be realistically expected with a proper tune, 50/50 meth mix, pump gas.
Dues anyone know what the approximate octane rating for this meth mix & 91 pump?
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      08-10-2019, 07:29 AM   #21
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Quote:
Originally Posted by ChrisFulton View Post
Very curious as to how much performance increase can be realistically expected with a proper tune, 50/50 meth mix, pump gas.
Dues anyone know what the approximate octane rating for this meth mix & 91 pump?
103-108 octane
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      08-13-2019, 04:34 PM   #22
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Quote:
Originally Posted by ChrisFulton View Post
Very curious as to how much performance increase can be realistically expected with a proper tune, 50/50 meth mix, pump gas.
Dues anyone know what the approximate octane rating for this meth mix & 91 pump?
Quote:
Originally Posted by switlikbob View Post
103-108 octane
I'd agree.
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