[///mfizzle]

Hey guys,

I have the BMS meth kit with FSB installed on map 3 and I love it so far. I run 93 oct with a 50/50 boost juice mix. I set:

Meth scale to 60
Meth add to 40
And start meth flow at 11psi

My question is. Can I start meth flow at a lower psi safely? Or is 11psi low enough? I cant find anywhere what other users start meth flow at. And are my other settings correct?

Thanks in advance.

[ajsalida]

Mine is set exactly like yours. I have read others start as low as 8 and up to 12. Lot more discussion over on N54tech's website.

[Stucks]

Mine is set to start flow at 4 psi. i know others who have set theirs lower.

[ajsalida]

Wow 4 is really low. Are you running map 3? What about your meth/water mix? I just installed my kit last week and still figuring out what is what. 91 octane and 50/50 meth/water.

[Stucks]

Originally Posted by ajsalida

Wow 4 is really low. Are you running map 3? What about your meth/water mix? I just installed my kit last week and still figuring out what is what. 91 octane and 50/50 meth/water.

its either 4 or 5 psi, i don't remember exactly. map 3, 70 additive. e85/93 mix and 100% meth. No issues and Iats are usually always around ambient on multi gear pulls.

[PeterPure]

my meth starts flowing at 12 psi

[brewnami]

Mine starts flowing at 8psi. Meth boost additive set to 65 since I am running around an E70 blend.

[CHECKERED]

I believe the default is 12psi, according to BMS that’s when meth is needed/has the most benefit

I start mine at 6psi to reduce the lag between when the meth starts following to when boost is actually raised due to built-in safety algorisms
I’m running Map 3 with 35 additive on 91 octane, meth:water at 80:20, single CM10 nozzle

[Jeff@TopGearSolutions]

I used to start meth flow as early as 6 psi

[Eurocraze]

you guys dont use progressive systems..? like partial spray at 4, then full at like 10/12 psi?? is anyone actually running a 100 octane map?

[Jeff@TopGearSolutions]

Originally Posted by Eurocraze

you guys dont use progressive systems..? like partial spray at 4, then full at like 10/12 psi?? is anyone actually running a 100 octane map?

You could run a system like that but most of us found it wasn't worth the extra step or expense. The biggest reason was that traditionally on other platforms you needed a progressive system to keep AFR in check on the low boost side of things and you didn't want to spray too much methanol on low boost. Those platforms were typically like Evo platforms that run in excess of 25 PSI, so you didn't want full bore meth at 7 psi by no accident.

This platform and ECU is so sophisticated you can pretty much spray blindly and it will adjust fuel accordingly and we're not dealing with that high of a PSI.

From an efficiency purpose you can spray with a progressive system but buying the components and calibrating the unit would yield no benefit except using a little less methanol if your inbetween those boost settings.

I typically drive WOT or like a grandma so I just wanted methanol flowing fully and atomized by the time I hit 12 psi so I sprayed early so it could in essence "ramp up" to full bore by the time this car hit 12 psi. I ran as high as an M12 Nozzle with a 6 or 8 psi settings. I later set it to about 7 psi and ran an M5 and M7 nozzle for further atomization efficiency.

[ajsalida]

OK now I am curious, what do you think is the reasoning behind recommending a higher level of boost to turn the meth on?

I need to do some baseline logs first but I like the idea of 6-8 PSI better than 11-12.

[Eurocraze]

i see Jeff, makes sence thanks. I ran a prgressive systemon my last ride, which was a MKV Gti. I saw boost as high as 21psi so yes that makes sence LOL.

with this is anyone running 100 octane or race map profiles with this...
spraying down low would make sence then....

[135Pats]

IDC based spray FTW. Aquamist FTW.

[proTUNING Freaks]

Ideally you'd want to spray meth based on injector duty cycle, load and a number of other parameters. We only support tuning for meth with Aquamist HFS-4 kits that come with the best turbine based failsafe on the market today and it supports 100% meth in all sorts of climates unlike some other kits. It is hard to recommend the best boost level to 'start' spraying at as you're really not 'starting' (modulating flow progressively) to spray with a kit such as yours. As such, anywhere from 4-8psi has been done in the past.

Do yourself a favour and get an Aquamist turbine based flow sensor and wire it into the JB to monitor flow as accurately as possible. FSB is an electrical device that calculates flow based on current at the pump and doesn't see actual fluid flowing through the lines to the nozzles. Terry's added support for various meth flow strategies in the last year and we'd highly recommend getting this set up on your car especially if you're running an aggressive tune with meth compensating for fuel volume/octane limitations.

Jeff is also right that our ECU, fortunately, is quite a forgiving one when it comes to fuel control as it will quickly adjust to changes in fueling due to meth. There are many other platforms that do this as well today having fuel controlled in a closed loop fashion. N54 is certainly no exception.

Dzenno@PTF

[CHECKERED]

Originally Posted by Eurocraze

is anyone actually running a 100 octane map?

at the track I run strait 100 octane on Map 3 with 75 additive, this setup maxes out the stock turbos

[Jeff@TopGearSolutions]

Originally Posted by Eurocraze

i see Jeff, makes sence thanks. I ran a prgressive systemon my last ride, which was a MKV Gti. I saw boost as high as 21psi so yes that makes sence LOL.

with this is anyone running 100 octane or race map profiles with this...
spraying down low would make sence then....

Originally Posted by 135Pats

IDC based spray FTW. Aquamist FTW.

Originally Posted by proTUNING Freaks

Ideally you'd want to spray meth based on injector duty cycle, load and a number of other parameters. We only support tuning for meth with Aquamist HFS-4 kits that come with the best turbine based failsafe on the market today and it supports 100% meth in all sorts of climates unlike some other kits. It is hard to recommend the best boost level to 'start' spraying at as you're really not 'starting' (modulating flow progressively) to spray with a kit such as yours. As such, anywhere from 4-8psi has been done in the past.

Do yourself a favour and get an Aquamist turbine based flow sensor and wire it into the JB to monitor flow as accurately as possible. FSB is an electrical device that calculates flow based on current at the pump and doesn't see actual fluid flowing through the lines to the nozzles. Terry's added support for various meth flow strategies in the last year and we'd highly recommend getting this set up on your car especially if you're running an aggressive tune with meth compensating for fuel volume/octane limitations.

Jeff is also right that our ECU, fortunately, is quite a forgiving one when it comes to fuel control as it will quickly adjust to changes in fueling due to meth. There are many other platforms that do this as well today having fuel controlled in a closed loop fashion. N54 is certainly no exception.

Dzenno@PTF

I agree and should clarify that there are more ideal and efficient ways to spray methanol, like IDC.

There really is not 1 straight answer for methanol users.

The most important aspect of methanol on this platform is atomization and even distribution between cylinders.

I also don't believe as much any more in spraying methanol for maximum performance, it's too much of a band aid.

When one is considering methanol, plan on spraying enough to keep the temps down and bump the octane but don't rely on it completely.

Most importantly, be sure you can monitor all 6 cylinders of timing.

Proper logging, tuning and maintenance of the methanol system is important.

You should check up on your datalogs every month I would say and make sure everything is running smoothly.

For some, this could be quite tedious, so if you have E85 in your area I'd go that route sooner.

As I said before, consider just spraying meth on top of E85/or pump to keep the IAT down but only tune the vehicle for max performance on the pump gas, that way you can leave some headroom for safety.

[Eurocraze]

Originally Posted by Jeff@TopGearSolutions

I agree and should clarify that there are more ideal and efficient ways to spray methanol, like IDC.

There really is not 1 straight answer for methanol users.

The most important aspect of methanol on this platform is atomization and even distribution between cylinders.

I also don't believe as much any more in spraying methanol for maximum performance, it's too much of a band aid.

When one is considering methanol, plan on spraying enough to keep the temps down and bump the octane but don't rely on it completely.

Most importantly, be sure you can monitor all 6 cylinders of timing.

Proper logging, tuning and maintenance of the methanol system is important.

You should check up on your datalogs every month I would say and make sure everything is running smoothly.

For some, this could be quite tedious, so if you have E85 in your area I'd go that route sooner.

As I said before, consider just spraying meth on top of E85/or pump to keep the IAT down but only tune the vehicle for max performance on the pump gas, that way you can leave some headroom for safety.

i def agree with the monitoring and tuning constantly aspect, that was a once a week deal for me... plus it was fun :-)

so with e85, you can mix that with regular pump gas..? is that what your getting at? i keep seeing this e85 stuff gettin tossed around, ive never ran it personally...

[Dave W.]

The trick with spraying meth is that it's both a fuel and an octane booster at the same time, so it's almost impossible to use it just for the octane boost and IAT suppression without needing to tune for the extra fuel it provides. It's possible to only spray a small amount and keep the AFR rich so if the meth system runs dry or malfunctions the engine is still safe, but a small amount of meth only gives a small bump in power. Simply put, spraying more meth makes more power if you're tuned for it. That's why I recommend paying a few extra bucks and getting a good quality system. Meth is addictive to your car and at some point you'll feel the urge to turn it up, so do it right and stay safe.