[woptang22]

I see alot of people using a 50/50 mix with meth. I was wondering if I should ask the install shop to use a specific mix? It sounded as if they wanted to use more meth then 50/50 but Im not totally sure. What are the advantages/disadvantages of using more meth?

[cn555ic]

More meth more power

[woptang22]

Originally Posted by cn555ic

More meth more power

Thanks for your response. Do people typically use a 50/50 mix or have you seen any mixes with more methanol? I guess I should leave it in the hands of the installers. But a BOV is also being installed and now Im reading its not good to have a BOV with meth because it could spray the meth in the engine compartment. Ive read some threads where people have used BOV's with meth and had no issues. But hopefully thats not going to be a problem.

[Lulz_M3]

What tune are you running?

[woptang22]

Originally Posted by Lulz_M3

What tune are you running?

Right now Im running COBB stage 2+FMIC aggressive. But I found a place on COBBS website that has COBBS access tuner software, so Ill be getting the HFS-3 kit installed plus a pro tune. Im pretty excited, but just trying to do some research on my own before the install. The company seems to work mainly on WRX and STI, but COBB said they should make some good power on my 335i. Just trying to see what people normally use as far as a meth mix. The shop didnt tell me what mix they plan on using, but from the talks I had with them, it seemed as if they wanted to use more meth then just a 50/50 mix.

[plague]

i use around 75/25 usually. youll really like meth on the n54.

[woptang22]

Originally Posted by plague

i use around 75/25 usually. youll really like meth on the n54.

Hey man how are you doing? So you use 75/25, how is your power with that? Have you had it dynoed? I cant wait to get the meth installed and the pro tune done. Just a bit nervous because the shop recommended a BOV which is paid for and now Im reading its not good to have a BOV with meth because the BOV could spray it in the engine bay. But Ive also talked to numerous people that said it should be fine and many people have a BOV with meth. But I think they want to use more then a 50/50 mix which would make it more flamable. But Im just trying to take the shops word for it that everything will be fine.

[benzy89]

Akuma?? 50:50 is the "safe" standard, but anything above 60:40 and you're running lighter fluid if anything spills on hot DPs. The BOV will only be open & venting in between shifts, so if you're WOT & meth is being injected into the CP, the BOV shouldn't be open very long. If you're running straight meth/very high concentration mix I'd be concerned, but the amount venting is negligible so on a "normal" mix you'll be okay.

[woptang22]

Originally Posted by benzy89

Akuma?? 50:50 is the "safe" standard, but anything above 60:40 and you're running lighter fluid if anything spills on hot DPs. The BOV will only be open & venting in between shifts, so if you're WOT & meth is being injected into the CP, the BOV shouldn't be open very long. If you're running straight meth/very high concentration mix I'd be concerned, but the amount venting is negligible so on a "normal" mix you'll be okay.

Yes sir Akuma Motorsports. Ive heard good things. Just not so sure how many 335i's they have worked on. It sounds like Akuma wants to use more then a 50/50 mix but Im not positive. But as far as the BOV spraying meth you dont think I should be too concerned with that? Only if they use a very high concentration of meth. But Im thinking they are definately using a higher concentration then 50/50 because when I told them I didnt want to use the WW as the meth tank, they said lets be safe and mount the tank in the trunk so we can use the meth mixture we want to. So that leads me to believe they want to use a higher concentration of meth. Just hoping all goes well.

[Lulz_M3]

It's your car, your call. If you don't feel comfortable running higher concentrations just tell them no. Your getting pro tuned so your map will be optimized for whatever meth mix they choose. Maybe go 50:50 meth/water and do a 50:50 E85/93 map. That should be SICK power.

[benzy89]

Well just from looking at Akuma's staff profiles, here's what it says about the owner:

John Shafer - Owner/Calibrator

John had started tuning cars 6 years ago, and has been around them for many years before. It is in his blood, as his grandfather raced jaguars with Paul Neuman so many years ago.

After a small stint in a local shop, John was recruited by Sport Compact heavy weight Cobb Tuning, LLC. At Cobb, John was given the tools and opportunity to excel in his specialty, ECU calibration. As a Cobb Tuning calibrator, John co-developed the GTR project and handled all of the customer tuning projects, from E-Tunes to in-house tunes.

During his stay at Cobb Tuning, he was an integral part of the ProTuner network support team. This included training and support for the ProTuners throughout the USA and internationally.

Now, in the market with his own shop, you can expect the same standard of excellence for the customers of Akuma Motorsports. Whether it be a full Standalone ECU or a Protune with the Cobb Tuning Access Port, you can rest assured you will get the same level or expertise that gained him his reputation throughout the industry. At Akuma we bring a total vehicle approach, from ECU calibration, suspension tuning, and motor engineering, your vehicle will perform better then you ever thought possible.

So your car is in VERY good hands. Ask them if they used something premixed or if want to run something more aggressive. Regardless SPEAK UP, t's your car + you're the customer, so if you only want to run 50:50, let them know.

+1 for getting both Meth & E85 Maps

[woptang22]

Originally Posted by benzy89

Well just from looking at Akuma's staff profiles, here's what it says about the owner:



So your car is in VERY good hands. Ask them if they used something premixed or if want to run something more aggressive. Regardless SPEAK UP, t's your car + you're the customer, so if you only want to run 50:50, let them know.

+1 for getting both Meth & E85 Maps

Personally, I dont know what mix is good to run. I guess 50/50 is safer, but more meth would probably be more power. So to be honest Id probably go with what they suggest if they can assure me it will be safe. But Im pretty excited to get it done.

[woptang22]

Originally Posted by Lulz_M3

It's your car, your call. If you don't feel comfortable running higher concentrations just tell them no. Your getting pro tuned so your map will be optimized for whatever meth mix they choose. Maybe go 50:50 meth/water and do a 50:50 E85/93 map. That should be SICK power.

I wish I could be I cant find e85 in my area. I think a place in center city philadelphia has e85 but it would be a real pain to go there to get gas all the time. But your right, it probably would be sick power. I cant wait to get it all done. But I am a bit nervous about it all just for the fact its all new to me and hope everything remains safe.

[rader1]

Meth concentrations above 50% don't make enough power to justify the risk. 100% meth compared to 50% meth probably is worth less than 10hp so just tell them to go 50/50 and not worry about it.

[woptang22]

Originally Posted by rader1

Meth concentrations above 50% don't make enough power to justify the risk. 100% meth compared to 50% meth probably is worth less than 10hp so just tell them to go 50/50 and not worry about it.

Thank you for your input. Thats probably the smart thing to do when the difference would only be about 10hp while using more meth. Thanks again.

[enrita]

since you have cobb use 50/50% and a small nozzle, like a 5 or 7 max. You only need it for IAT suppression and add more octane, NOT fueling.

[woptang22]

Originally Posted by enrita

since you have cobb use 50/50% and a small nozzle, like a 5 or 7 max. You only need it for IAT suppression and add more octane, NOT fueling.

By not fueling do you mean using more then a 50/50 mix? Im guessing more then that wouldnt be necessary? As far as performance goes, what kind of gains could be possible with a meth install using 50/50 vs say 70/30? Is the power gain not that noticable when using 70/30 over 50/50 ? thank you for your help.

[enrita]

i mean using a smaller nozzle than what you use with piggybacks. Running a map from cobb not designed for meth will result in negative fuel trims if you inject to much of it especially fuel. you wont see any gains changing the mix without having a map for it.

[woptang22]

Originally Posted by enrita

i mean using a smaller nozzle than what you use with piggybacks. Running a map from cobb not designed for meth will result in negative fuel trims if you inject to much of it especially fuel. you wont see any gains changing the mix without having a map for it.

Well Im getting a Pro Tune along with the meth install from one of COBBS recommeded installers that have the access tuner software. That should allow me to utilize the full benefits of Methanol shouldnt it?

[saxon]

he was saying with cobb you dont need to use meth to get the extra fueling needed for a safe a/f ratio... with cobb you can get enough fuel out of the stock fuel system without the need for meth.. so that means you can use meth for only the cooling/knock suppression

[cstavaru]

Originally Posted by woptang22

I see alot of people using a 50/50 mix with meth. I was wondering if I should ask the install shop to use a specific mix? It sounded as if they wanted to use more meth then 50/50 but Im not totally sure. What are the advantages/disadvantages of using more meth?

If you are using 50/50 you have to inject a lot (I am using 1200cc/min), but it works well. I now use 60/40 and it works even better (same power, but less mixture injected).

I would advise you to stick with 50/50 for the beginning. But make sure you install a meth elbow or charge pipe with 2 bungs and 2 nozzles, in order to have room for high mixture flow. I found myself many times with too small nozzles for the 50/50 mixture, and I had to change. I am now using 2x1.2mm nozzles and it works well.

[Ilma]

Originally Posted by cstavaru

If you are using 50/50 you have to inject a lot (I am using 1200cc/min), but it works well. I now use 60/40 and it works even better (same power, but less mixture injected).

I would advise you to stick with 50/50 for the beginning. But make sure you install a meth elbow or charge pipe with 2 bungs and 2 nozzles, in order to have room for high mixture flow. I found myself many times with too small nozzles for the 50/50 mixture, and I had to change. I am now using 2x1.2mm nozzles and it works well.

That's interesting........

I just bought two 1.2mm jets as well and asked Jeff Howerton about stepping up from the dual 1.0's.

Here is what he said: "2 x 1.0mm jets should work fine for 50/50 or 100%. I wouldn't use the 1.2mm for 50/50 In the end, it all depends on the tuning."


So what improved for you?

I think the concern with flowing too much water with a 50/50 mix would be quenching the engine