[persian54]

I was thinking of doing meth next.. but have heard it's a bit too dangerous

as in, if there is a leak.. or that it can 'blow the engine'


I mean, I don't NEED it... but I already have DPs, FMIC, tune... other than having a full catless system and meth.. there isn't much left (Well, other than upgrading the turbos, but that's a different story...)


I've read a lot on meth butttt didn't really see much about a 'leak'
which is my main concern..
last thing I need is meth leaking... anywhere..

Thanks

[GreenPlease]

The last thing I need is meth leaking

That's the last thing anyone needs. No denying the clear flame of meth is dangerous but with a proper install and common sense you should be fine (common sense, if you have a meth tank in your car and get rear ended, get the f**ck out of your car)

[PUMPD]

Yea.....Meth.....bad stuff,man.....
I mean that crap can blow your damn head off, real nightmare, don't do it. No matter what...... don't do it.

DON'T DO IT

[JayKay335i]

Its pretty benign without a spark and from what it looks like, the tanks are rather beefy and sit in the trunk. There are only so many places for it to leak inside the car, the trunk being it. Since with normal use people tend to fill up every week to two weeks, you should notice a leak in the trunk fairly easily/quickly.

Might as well get meth.

[coolingmist]

Several things you should consider.

running a 50/50 Mix will greatly reduce the chance of a fire. The higher the concentration of meth to water the lower the flash point. The 2nd thing you should do is get a system with a very good meth line such as our CMGS systems.

Lastly, if you choose to get a meth system, choose one such as CMGS that will alert you to an over flow or underflow situation so you can take action.

CM

[MFKN3]

No one has been able to tell me how the N54 turbos cope with meth??

On many other cars, meth use sends the EGT too high and very quickly destroys the turbos and ceramic seals.

[onefastman]

You do not inject before the turbos, you do it on the cp right before the throtle body

[scheherazade]

are you scared of spilling rubbing alcohol?
are you scared of spilling 180 proof liquor?
methanol isn't any more dangerous than either of those, matter of fact, it's extremely similar.

And like all alcohols, an open flame doesn't burn very hot.

It's *mostly* used as an agent in 50/50 injection to help the water absorb heat.
water evaporates slowly, methanol (alcohol) evaporates fast.
water can absorb a lot of heat before evaporating, methanol absorbs very little heat before evaporating
meth/water mix has alcohol evaporate fast, but the water absorbs the heat from the alcohol (slowing the alcohol's evaporation), effectively trading fast evaporation for fast heat removal.
The 'fuel' benefit of methanol is small (though it does give some octane benefit)
You should adjust the mix (more water for lower IATs, more alcohol for higher octane), depending on what you need more.

The danger of methanol is " if it stops flowing AND your engine timing stays advanced ", then your engine starts to ping really bad - eventually breaking a rod.

-scheherazade

[maui86]

Originally Posted by xsboost

No one has been able to tell me how the N54 turbos cope with meth??

On many other cars, meth use sends the EGT too high and very quickly destroys the turbos and ceramic seals.

i doubt that is the case. i mean, if someone is running 17psi on race gas and then runs 17psi on pump+meth, the EGT should be roughly the same all else being equal.

i think its more so of an issue of when people decide to use meth as a means to take their turbos beyond their capabilities since the air charge cooling AND octane benefits are amazing with meth.

meaning... that lets say hypothetically speaking that at 19psi, the IATs start to override the high octanes(eg. 100oct+) ability to prevent knock from the race gas alone. since the the turbos are out of its efficiency range, it may result in a higher than ideal EGT.
methanol is an octane booster as is and when mixed with water it provides great air charge cooling. so one may be able to run at 19psi since the IATs are reasonable and the octane benefits keep everything running smoothly. so in return your EGT may increase given the stress on the turbos.

in a nut shell...i dont think meth in its self causes higher EGT from my experience with my friends stage3 w/toys srt4 running meth and/or race gas. its whether or not you stay within the turbos range of efficiency :-)...

hope this helps and if i'm wrong anywhere, shiv or cooling mist please correct me.

teri

ps...like shiv and cooling mist says, you should have fail safes to prevent your engine from any possible damage in case of a leak/clog/pump failure. if your meth stops, you want your tune to switch to a pump/valet map and not continue on in a hot map for obvious reaons.

[onefastman]

So if you run meth full time with say map 5 or 7 and it runs out could this cause damage? Does the ecu advance timing automatically?

[ridin135]

Originally Posted by onefastman

So if you run meth full time with say map 5 or 7 and it runs out could this cause damage? Does the ecu advance timing automatically?

Yes if there were no failsafes installed. But both procede and jb3 have kits that include failsafes if you purchase them.

[jblackwell]

This makes the most sense to me:

http://www.e90post.com/forums/showthread.php?t=331829

http://www.e90post.com/forums/showthread.php?t=105682

[newbieman78]

Don't Do Meth man..u crazy.


Just look at what it will do to you.

[SennaZ]

Originally Posted by persian54

I've read a lot on meth butttt didn't really see much about a 'leak'
which is my main concern..
last thing I need is meth leaking... anywhere..

You do realize that windshield washer fluid contains methanol... and for some low temp mixes, more than 50%. Do you check your washer reservoir every couple of days for leaks?

[badass335]

Originally Posted by newbieman78

Don't Do Meth man..u crazy.


Just look at what it will do to you.

[jblackwell]

Originally Posted by newbieman78

Don't Do Meth man..u crazy.


Just look at what it will do to you.

Yeah, and have you ever seen where they make the shhhhh?

[onefastman]

Originally Posted by ridin135

Yes if there were no failsafes installed. But both procede and jb3 have kits that include failsafes if you purchase them.

So how would the fail safe protect with timing? Doesn't it just switch to a lower map? What if you run meth with no tune and then ran out?

[persian54]

Thank you for your responses everyone

I think that, for now, I will just invest my money into a LSD/tires... no point in having extra power if I cannot put it to the ground...

Thank you.

[GreenPlease]

^good thinking

[midlife]

Originally Posted by scheherazade

are you scared of spilling rubbing alcohol?
are you scared of spilling 180 proof liquor?
methanol isn't any more dangerous than either of those, matter of fact, it's extremely similar.

And like all alcohols, an open flame doesn't burn very hot.

It's *mostly* used as an agent in 50/50 injection to help the water absorb heat.
water evaporates slowly, methanol (alcohol) evaporates fast.
water can absorb a lot of heat before evaporating, methanol absorbs very little heat before evaporating
meth/water mix has alcohol evaporate fast, but the water absorbs the heat from the alcohol (slowing the alcohol's evaporation), effectively trading fast evaporation for fast heat removal.
The 'fuel' benefit of methanol is small (though it does give some octane benefit)
You should adjust the mix (more water for lower IATs, more alcohol for higher octane), depending on what you need more.

The danger of methanol is " if it stops flowing AND your engine timing stays advanced ", then your engine starts to ping really bad - eventually breaking a rod.

-scheherazade

what is your opinon re:
i am in a warm climate and at 8,500 feet above sea level runinng full bolt ons and 97 octane.
should the 50/ 50 mix for me be adjusted with more meth or less meth ?

thanks

[dlbrooks18]

Originally Posted by persian54

Thank you for your responses everyone

I think that, for now, I will just invest my money into a LSD/tires... no point in having extra power if I cannot put it to the ground...

Thank you.

yea, good call.. LSD does wonders!

[scheherazade]

Originally Posted by midlife

what is your opinon re:
i am in a warm climate and at 8,500 feet above sea level runinng full bolt ons and 97 octane.
should the 50/ 50 mix for me be adjusted with more meth or less meth ?

thanks

Log your IATs and adjust your timing ahead until you get some knock retard.

Then depending on how high your IATs are, and how much you could adjust timing before you had knock, you can make an educated decision.

-scheherazade