Methanol injection and Nitrous installed

[JCL]

Originally Posted by tynashracing

JCL,

I think he's actually using 1/3 gallon per tank of gas. Look at his post again. He said he can fill the tank 3 times with one gallon. And he fills the tank 1 time per tank of fuel depending on how aggressive he's driving.

So, that should change the numbers, right?

Yes, that will make it even less impact. I used the Snow Performance figure of gallon per tank.

[JCL]

Originally Posted by bcredliner

.....There should be gain in performance at full throttle because the addition of methanol will cause the computer to allow more timing.

You are correct that the fuel behaves like a higher octane rather than actually increasing octane. According to literature I can run regular due rather than premium and get the performance of premium or higher. With premium I should get the behavior of race gas. I will try some regular the next time my tank is empty.

I have no expectations of mileage increase, if, in fact it will increase mileage at any setting. Snow Performance made no mileage % claim though it is stated there will be mileage increase due to leaner mixture and efficiency. I will check the mileage for grins.

There was nothing in my consideration about saving money. The goal was to improve performance minimizing the risk with 150 shot of nitrous.

I understand your motivations, and agree with the reasons for installing the system. It is just that there were points raised above about power increases, others using this instead of higher AKI fuel, and that the AKI number would change.

Your tune may advance the timing beyond what 92 AKI permits, and so you may get more power. For practically everyone else reading the thread, increased AKI is of no value and will not provide more power, since the timing won't advance beyond what BMW deemed safe for 92 AKI.

[bcredliner]

I am not an expert and that is why I will be doing dyno runs to see actual results. I do know that timing is certainly major factor but it is not the only reason to expect performance gains from methanol injection. I may not be explaining things well, sorry if that is so. Check out frequently asked questions at Snow Performance : Snow Performance Water Methanol Injection Systems. The Best Most Accurate Gas and Diesel Water Methanol Injection Strategies for Fuel Injected Carbureted Turbocharged Supercharged.

As I read it and have had verified, other than by dyno, a methanol system will increase mileage. Some are sold to do just that and claims are 5-15% improvement. Allows for leaner air/fuel mixture and increased timing.

Also, again as I have researched even without increased timing there will be performance improvements with methanol injection due to reduced intake temperature and improved charge air density. My tech says I get increased timing as the computer doesn't retard timing as much as it would with just gas. I guess that means more timing lower in the RPM ranges?

And no, I don't believe everything I read or am told.

[PetrieJ]

Great job. Can't wait to hear more.

[tynashracing]

Originally Posted by bcredliner

As I read it and have had verified, other than by dyno, a methanol system will increase mileage. Some are sold to do just that and claims are 5-15% improvement. Allows for leaner air/fuel mixture and increased timing.

Also, again as I have researched even without increased timing there will be performance improvements with methanol injection due to reduced intake temperature and improved charge air density. My tech says I get increased timing as the computer doesn't retard timing as much as it would with just gas. I guess that means more timing lower in the RPM ranges?

And no, I don't believe everything I read or am told.

Interesting.
This is something that I was looking into for my now sold C-Mod race car. I was looking for ways to cool things down for better burn and increased fuel economy. Fuel economy in racing conditions can be a game changer.
I suspect that the Alpha N tune on my S50B32 engine (euro)...which had a mass air meter delete would've also created a bit more power.

Good for you man. Awesome installation!

[bcredliner]

I spoke with tech support at Snow performance. They make a system just to increase mileage. They also make an add on for the performance system that will increase mileage. I have the performance system without the add on.

The amount of metanol injected is proprietary information so I can't provide a ratio. The amount has to do with the horsepower of the engine and other factors that result in the most efficient burn.

Another way to look at this is that the amount of methanol is not linear. So, in theory, the ratio of water/methanol could be 40-1 at the pulse width the controller is programmed to begin to add methanol/water to the air fuel mixture. And, in theorythe ratio could be 1-1 at full demand So if the engine was at full demand for the duration of the time it takes to empty a tank of boost juice, the tank would empty faster than if would if the pulse width was at the miniman demand where Methanol/water is added. Generally, with a performance system there is no methanol/water until 5% greater than pulse width demand at cruising speed.

The system for mileage works differently, different jets, and greatest contribution to mileage increase when it is activated when passing or during uphill grades--the more efficient air-fuel mixture because of the addition of methanol/water results in a mileage increase in those situations.

I didn't do this for better mileage or cost saving so I did not purchase that system or the add-on for the stage 3 system.

[electricalserv x5]

yes a 4.6is on meth is right, that is insane.................

[Vincenzo Veyron]

Originally Posted by bcredliner

Well, against advice, caution and reason I have added methanol injection and a 150 shot of nitrous to my X5 4.6 that already had Dinan cold air package, throttle body, air flow meter, stage 4 engine software,transmission software and free flow exhaust. I did decide to have Stett Performance, a local BMW specialist, do the install to eliminate some of the risk.

It was well worth it!!!! I am VERY pleased with performance!!!

this set up sounds awesome. i am considering adding the snow meth kit to my 2011 e70 50i. have you ever experienced any problems with it?

[bcredliner]

Originally Posted by Vincenzo Veyron

this set up sounds awesome. i am considering adding the snow meth kit to my 2011 e70 50i. have you ever experienced any problems with it?

No problems but I did add a check valve to keep the meth from draining into the intake tube. I suggest you do that as part of the install. I used the snow kit with the controller so I can adjust when the Meth starts and when it reaches max spray. I never use anything but boost juice from Snow. Install takes time but it is not complicated. I had to put the tank in the rear. If you can find a place under the hood or are willing to use your washer tank the install would be easier than mine was.

Good luck and if you have any other questions fell free.

[Vincenzo Veyron]

thx for the quick response! i can only do the simplest of DIY projects and this one would be waaay over my head. i'll share your feedback with the mechanic. i like where you put the tank. i have free space in that location as well and dont want to mod the washer tank. how much additional hp do you think you are getting?