[FoShizzle]

This talk about methanol injection is very interesting. I'm trying to understand this. Maybe some of you guys can chime in here.

After some searching, here's what I've gathered: You inject a mixture if methanol and water WITH your fuel (at the fuel injector - not in the tank). This effectively raises the octane of your fuel while at the same time cooling your engine and cleaning your valves & injectors. To do this, you obviously need a reservoir tank and some sort of variable pump.

I know shiv's working on this, but whats really involved? I seems like there's a small handful of people doing this right now. I'd be very tempted to give this a go if I had a little more direction.

[techforge]

I may be wrong, but I think it gets injected into the intake charge prior to the IC. Part of the benefit of methanol is it substantially cools the intake charge giving the same benefit as driving in frigid air. Then there's the octane benefit you already mentioned.

[jb's335]

Originally Posted by techforge

I may be wrong, but I think it gets injected into the intake charge prior to the IC. Part of the benefit of methanol is it substantially cools the intake charge giving the same benefit as driving in frigid air. Then there's the octane benefit you already mentioned.

Why before the IC? Then you would just soak the internal passages of the IC, reducing airflow. Most people run the methanol nozzle right before the throttle body.

In order to run methanol on a 335i you must have a new BOV pipe installed on your car. The stock plastic IC pipe that holds the bpv's is not strong enough to hold a methanol nozzle, or at least I wouldn't want to risk it. Methanol is not that difficult to do, it just requires a little wiring skills and some time to run all the cables/lines.

Methanol is also very safe as long as you incorporate failsafes. They make low tank indicators so you can tell if you have a low amount of methanol and either fill up or shut the system off. The biggest safety factor would be if the methanol suddenly shut off during a full boost run in high rpms. With some of the software supposedly available from Vishnu, and hopefully from JB in the near future, that is quick enough to detect this and safely alter parameters to keep the engine running safe.

[akira42]

Where do you buy methanol?

[MrWhite1015]

Originally Posted by akira42

Where do you buy methanol?

your local meth dealer... just go to the shady part of town and find a guy scratchin his neck a lot




i know a lot of performance shops carry it ... like ICS has tons of it laying around

[bdkevoIX]

Originally Posted by jb's335

Methanol is also very safe as long as you incorporate failsafes.

In an ideal world this is true. But even with a failsafe and AEM EMS, I see lots of engines go kaboom. And meth is sprayed in intake mani in atomized fashion which greatly reduces IAT(intake air temp).

Why do you think every evo, sti, supra guys aren't using this?
There is definite benefit but also a risk. Some are willing to take this risk which is fine but not me.
I would just spend a good bit more money for e85 conversion and run 30psi SAFELY all day long.

[FoShizzle]

Good info. I hear methanol is also available at some go karting places and drag strips.
Whats the total cost of putting this all together? Anybody up to doing a DIY?

[jb's335]

Originally Posted by bdkevoIX

In an ideal world this is true. But even with a failsafe and AEM EMS, I see lots of engines go kaboom. And meth is sprayed in intake mani in atomized fashion which greatly reduces IAT(intake air temp).

Why do you think every evo, sti, supra guys aren't using this?
There is definite benefit but also a risk. Some are willing to take this risk which is fine but not me.
I would just spend a good bit more money for e85 conversion and run 30psi SAFELY all day long.

It may not be safe if you are talking about running a tune that is taking FULL advantage of the extra methanol. However 90% of the people on this forum will never have a car that high strung! Yes if you are running 30 psi on a big turbo and are on the super-fine line between detonating and not, yes, you are running a big risk.

But a 335 running a regular tune on stock turbos using methanol to lower his intake temps and maybe give a slight boost in octane will not have catastrophic circumstances if the methanol fails.

[Forrest Gump 9]

E85 would be ideal, but I doubt the fuel pump like it. Speaking of that, have anyone have any lead on upgrade fuel pump and injectors??

[jb's335]

I was hoping Shiv would chime in on this and give us an update on how his adventures with methanol are going...

[marconi118]

injected methanol quantity shall be proportional to intake air (calculated on RPM and presssure) or can be constant above a certain PSI (8)???

[Qmax03]

im running a SNOW PERFORMACE stage 3 meth kit.. and yes its injected about 6in away from the TB, im running 80meth 20 water.. you can drive your car on the race map with out any detonation... car feels GREAT.... with the meth and 93oct the oct is raied to about 98-100oct... good for the race gas map...its a hugh power adder when boosted.

^^^ This is not on the 335.. this is on the Supra....

[FoShizzle]

Originally Posted by Qmax03

im running a SNOW PERFORMACE stage 3 meth kit.. and yes its injected about 6in away from the TB, im running 80meth 20 water.. you can drive your car on the race map with out any detonation... car feels GREAT.... with the meth and 93oct the oct is raied to about 98-100oct... good for the race gas map...its a hugh power adder when boosted.

^^^ This is not on the 335.. this is on the Supra....

Found it: http://www.snowperformance.net/product.php?pk=75
$689! Wow.

[cn555ic]

I would just wait for Vishnutuning kit thats will be available in the near future!

[beepbeep]

Water/meth injection makes any given level of tune safer by suppressing detonation. Both the water and the meth raise the effective octane level of the air fuel mix. In addition the water, with some help from the meth, absorbs heat (reduces IAT) in the incoming charge and then during combustion.The only way water/meth can hurt the engine is if you exceed the added safety margin by increasing boost. Ideally, you use up only part of the added safety margin (effective octane increase)with more boost and use the rest for increased detonation protection. Of course water/meth doesn't add any protection to the drive train. I think the coming water/meth injection will be a big step forward in tuning these great N54's in both power and longevity.

[Curt2000]

Meth is definitely an advantage and very safe if used properly, just take a look at Shiv and ASR's ‘500whp been there done that thread’, it’s obvious that there is a significant delta between the dyno runs with and without meth injection.
Personally I like to try and make as much HP without any 'perishable' systems, i.e. N2O, Co2, Meth because they will all eventually run out and most likely at the most in-opportune moment! I want to spend my money on power that is available all the time that won’t run out because I'm just lazy when it comes to refilling bottles and at that point it’s just dead weight in my engine bay/trunk.

[beepbeep]

Originally Posted by Curt2000

Meth is definitely an advantage and very safe if used properly, just take a look at Shiv and ASR's ‘500whp been there done that thread’, it’s obvious that there is a significant delta between the dyno runs with and without meth injection.
Personally I like to try and make as much HP without any 'perishable' systems, i.e. N2O, Co2, Meth because they will all eventually run out and most likely at the most in-opportune moment! I want to spend my money on power that is available all the time that won’t run out because I'm just lazy when it comes to refilling bottles and at that point it’s just dead weight in my engine bay/trunk.

I agree with what you say, even your lazy part, being a card carrying member of that group. However with Shiv's proposed setup, when you run out of water/meth, you default to a no meth tune. So at worst, you break even. And when you are out of water/meth, the dead weight is gone from the trunk.

[Curt2000]

Originally Posted by beepbeep

I agree with what you say, even your lazy part, being a card carrying member of that group. However with Shiv's proposed setup, when you run out of water/meth, you default to a no meth tune. So at worst, you break even. And when you are out of water/meth, the dead weight is gone from the trunk.

I'm sure it would be an outstanding product and will make customers very happy!

[Grendalf]

This is from Nasioc forum( North American Subaru forum). It has great infos on meth/water injection system

http://forums.nasioc.com/forums/showthread.php?t=937176

Hope it helps

On a side note, I have some friends running an aquamyst system on their STi and at the end of the day they all end up not using it because they found that the 40 more hp didn`t worth the trouble. Moreover, I don`t know for your region, but having 450 whp or 400 whp it only helps you in straight line the real fun is pushing the car at his limits in curves which you obviously don`t need 450 whp... I experienced it and you are better driving/controlling a 300whp in every situation than flooring a 450 whp in straight line and using 50% of the potential everywhere else . Well that`s my thought... Anyway, it is a pretty cool thing to play with

Later and have fun

[SG333E]

I have meth injection on my 87 Grand National. Our systems are progressive, meaning the more boost the more alky. Does protect against the occasional high boost vac line blow off problem.

I'm a big fan, but I can't imagine dealing with it on a daily driver/only car. It's great to have on a toy, but I need about 2 gals of meth a summer. Further, there are some threads in this forum alluding to headgasket problems after someone went to "max boost". I'd be concerned if you don't know exactly what you are doing with a 335. No way BMW is going to say "ok no problem, the hole in the top of the piston happened on a stock tune".

Boost addiction is a slippery slope.

[oddjob2021]

I have W/M injection, Probably one of the first to have it on a '35. I've had it since Aug. of '08! Been running great since the beginning. I also have a progressive spray that starts at 4psi, SG333E.

[SG333E]

Well I figured any system newer than mine would be progressive, but someone above mentioned "linear" and I wanted to clarify that.

Your car sounds tits, do you have an ET or dyno number for me