[spool twice]

The reason of the range in methanol content is because of various MSDS sheets I've seen on this brand/model.

Where to find: Target automotive section
Price: $1.59/gallon

At the moment, I'm going to say this is probably more useful to me than any 50/50 ratio mixture because:

I'm only running a peak of 17psi on my 18ohm board. This is more than fast enough for me, even after 5 months of various mods. This $1.59 windshield washer fluid does the trick without needing to spend anymore $$, anything above with my current setup is an overkill and really no difference in acceleration feel.

Mods: DCI, CM methanol injection, 40%/60% E85/93 octane blend, JB4 map 3. My system had issue's getting 100% flow, but as long as it's above 50%, it'll hit the timing curve with no drops. Timing curve starts at 10.5 and advances up to 13.5 peak @ 6,450rpm. I even seem to think having that high of an E85 ratio is an overkill, but I wanted to be safe considering I lowered my Methanol content.

car is happy, and again, it's only $1.59

[6MTE92]

How many CC's are you injecting?

[Jeff@TopGearSolutions]

Originally Posted by 6MTE92

How many CC's are you injecting?

Great question. If the nozzle is too larger it might be too much water, although I doubt that is the case here but definitely something to think about for people running large nozzles who are down with high meth concentrations.

[Former_Boosted_IS]

When you inject water/methanol, the amount of water that goes into your engine is key on this motor. Anything over about 350 ml/min seems to cause quench on this motor.

[spool twice]

IIRC CM10 nozzles are rated at 800cc/min @ 150psi. My pump is set at about 200psi

[spool twice]

Should I be reconsidering using this considering my logs look healthy and the car feels just as strong?

[Ilma]

Originally Posted by spool twice

Should I be reconsidering using this considering my logs look healthy and the car feels just as strong?

I think the only way to really know is to measure power on a dyno.

I went to larger nozzles and reduced my meth percentage to 40% meth 60% water.

My timing curves looked fantastic!

But the car seemed to bog at lower rpms in high load gears like 3rd and 4th.

I upped the meth percentage back up to 80% and the car feels a bit more powerful, but my timing dropped about one degree up top.

I suspect that too much water will give you nice looking timing curves due to the combustion chamber cooling - but it may also reduce power.

So you can't rely on how your timing curve looks to indicate power levels. You would have to verify and fine tune on a dyno.

I think Formerboosted is right about quench.

There seems to be a fine line there. Too much water seems to rob you of power since it's effectively replacing fuel that would otherwise be making power.

[Ilma]

Originally Posted by Former_Boosted_IS

When you inject water/methanol, the amount of water that goes into your engine is key on this motor. Anything over about 350 ml/min seems to cause quench on this motor.

Hey Former.....how did you come up with that number?

Seems to be in the ballpark. Would be nice if there was some math behind it.

Howerton doesn't recommend running more than 15% of your total fuel with a 50/50 mix. Problem is that no one seems to know what the stock injectors flow at, so it's difficult to calculate how much 15% of that would be.

[Wedge1967]

Splash is good stuff. Cost effective and keeps the intake temps low. For daily drive... +1

[OpenFlash]

If you inject too much water, your logs will look great. But you will be down on power.

+1 regarding the need for dyno tuning

[Former_Boosted_IS]

Originally Posted by Ilma

Hey Former.....how did you come up with that number?

Seems to be in the ballpark. Would be nice if there was some math behind it.

Howerton doesn't recommend running more than 15% of your total fuel with a 50/50 mix. Problem is that no one seems to know what the stock injectors flow at, so it's difficult to calculate how much 15% of that would be.

Sadly I have tested probably 30 different nozzle combos for this car from single to dual to quad nozzle setups. I find that I had to adjust my water/methanol percentage to keep my water injection to under 350 ml/min to stop quench.

[spool twice]

I guess the question is, how much power can this really rob if i'm only capable of running 17psi using an E85/93 octane mix with a 31% methanol ratio?

Is the extra octane above what an E85/93octane mixture already provides at that boost level necessary? or is it an overkill? Would lowering IAT's using a higher water concentration a better way to go to keep the timing happy. Keep mine mind that I'm strictly talking about 17psi between 4,700-5,200rpm tapering to 14psi above 6,500rpm

I guess those questions will be answered on a dyno like everyone has suggested.

[Ilma]

Originally Posted by spool twice

I guess the question is, how much power can this really rob if i'm only capable of running 17psi using an E85/93 octane mix with a 31% methanol ratio?

Is the extra octane above what an E85/93octane mixture already provides at that boost level necessary? or is it an overkill? Would lowering IAT's using a higher water concentration a better way to go to keep the timing happy. Keep mine mind that I'm strictly talking about 17psi between 4,700-5,200rpm tapering to 14psi above 6,500rpm

I guess those questions will be answered on a dyno like everyone has suggested.

Your particular tuner suggested you will lose around 15-20 hp with such a high water mix.

But what really sucks is the lag/bog at lower rpms if you quench with too much water.

[spool twice]

Originally Posted by Ilma

Your particular tuner suggested you will lose around 15-20 hp with such a high water mix.

But what really sucks is the lag/bog at lower rpms if you quench with too much water.

I haven't noticed any bogs yet, but I'll do some more driving with it and report my findings after running this tank down. A bottle of HEET ($1.04/bottle if you buy a 4pack from wally world) will bring my methanol content near 40% which could possibly be a better way to do. That will still end up to be $2.61 for alittle more than a gallon of water/meth mix.

Just trying to pinch some penny's