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03-18-2010, 02:33 PM | #67 |
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Most people also run 50% meth/50% water which decreases the corrosional properties of straight meth .
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03-18-2010, 02:35 PM | #68 |
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03-18-2010, 02:36 PM | #69 |
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Exactly, when you use the smallest nozzle, it evaporates before it gets into the motor.
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03-18-2010, 02:59 PM | #70 |
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So Meth is a good thing thus we minimize the known downsides ? Discussable and to be discussed. Back to the drawing table with our SC kit .
The S65 engine has a distance of 0.98cm between the cylinders, the block is flow-formed aluminium ( Nikasil ). Here boost up to 7.5 PSI is applied. A 335i block ( aluminium as well ) has iron sleeves and the stock boost is 8 PSI. Thus the compression ratio is higher on the S65 as well, I wonder why the cylinder walls don't break in case of major detonations. Meth is a great band-aid here. Only applying 3-4 PSI boost could also be an approach until we know how good the engines last. More data about oil- and coolant temps to be considered. |
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03-19-2010, 02:45 AM | #72 |
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There are hundreds of thousands of cars that run meth without issue. EVO's, WRX's, SRT-4's, ect. ect.; they all love meth! There are HPF kits running meth with nearly 40k miles on them, and these kits are running 100% pure meth and for the stage 2.5 cars, the meth is even being used as a fuel source! (If I recall correctly, somewhere around 20% of the fuel is coming from meth!) If a motor is going to corrode or have any issues from the use of meth like it is being claimed here, a HPF stage 2.5 car would be more likely than any other car that I know of, and we have yet to see of ANY such thing!
I agree that a car that is tuned to rely on meth can be dangerous, unless there are fail safes in place. But, if the correct fail safes are in place, there is nothing to worry about. There are fail safes that can open wastegates or blow off valves in order to reduce boost levels in the case that meth flows under a certain threshold. Some can retard timing as well. Adding meth to a car that isn't tuned for it, can only help (unless too much meth is being injected, causing the car to run too rich). It will reduce IAT's immensely and can increase octane; (octane increase can vary greatly depending on mixture and the amount of meth being used) both of these things are key items that produce more power and consistency. The only thing I can not comment on are the claims about the meth interfering with the new generation ion knock sensing technology. However, by the looks of what has been done so far by Sticky and DLSJ5, it doesn't look that there is anything to worry about. I am waiting and hoping to see some concrete info and data about this subject. Last edited by MspiredM3; 03-19-2010 at 11:00 AM.. |
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03-19-2010, 06:21 AM | #73 |
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Hi Guys,
seems like everyone has now finished posting and scrutizing so I think it's now a good time to post. Most people can quite clearly see where I am coming from on this one. I have already explained that methanol has an effect on the ion knock control system. Member 'Lemans M Blue' has posted information already from which you should be able to understand why the problem is caused. If you cannot understand from that post then there is nothing I can post up to make you understand. Now, I am going to make my statement again and this time I am not going to assume that anyone has read anything else I've written. - Using Methanol on an engine which is not tuned to use methanol will cause the knock detection system to not work properly and therefore will lead to problems with the S65 engine. Not the S54, the S65. Again.... the keywords used are NOT TUNED FOR METHANOL. And I'll say something else again - those of you who are planning to use methanol on the S65 (not the S54 or S50...the S65) with supercharger kits WITHOUT it first having the ECU tuned to take this into account - your motors will most likely encounter major issues. Some members would like to know why methanol has this effect on the ion knock detection system. Ok, when you understand what Lemans has written about then I will. To be honest, I would have had the attitude of some members been a little more positive. I sense some members will go blue in the face to prove something wrong no matter how much logic or proof I am prepared to give. Therefore, I do not see the point of posting such an explanation if it's just going to create a scenario of going round and round in circles. The more evidence I give, the less people may understand, the more likely it is that statements will be taken out of context and the whole thing is a waste of time for me to write and for people to read. Moving on. If you are using methanol and the tune has been calibrated to do so then you should be fine. So, the key area is the TUNE. I do not take what anyone here has said out of context or just picked up on a single line and based my responses on that. I would appreciate if that is not done to me. I don't think that's too much to ask from a group of adults is it? |
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03-19-2010, 11:13 AM | #74 |
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Still waiting on some information that is very knowledgeable about this topic, much more so then all of us.
One thing i want to add again is that since meth effects the KD due to different burn characteristics, wouldn't any other gasoline do so as well? If other gas octanes and gas companies have different burn rated gasoline wouldnt that also adversely effect the KD? So in essence, if you use a different fuel (different then the one the factory used to tune) your motor will blow up? |
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03-19-2010, 11:17 AM | #75 | |
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Although i disagree with this subject, i am waiting to hear some official information. I still do not see ANY TYPE of facts or proof of methanol causing a S65 to blow up. You stated your theories but nothing more. Where is the data for your theory? Ive also heard from the owners of the Gpower cars who themselves don't agree with your theory... |
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03-19-2010, 11:55 AM | #76 | ||
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Have you or LBM ever used meth on ANY car? Ever tested it on the s65? No someone that has tested it on the s65? Please provide some proof, you even say you have it above... Quote:
There can be 'what if's' with nearly anything in the world. If you want to live and worry about all the 'what if's' out there, well then, you shouldn't be messing with FI in the first place. I mean, what it the the blow off valve malfunctions and doesn't relieve boost? Or what if a part of the power to the pump on the FI cooling system fails? The meth fail safes are pretty simple, it's a little box that measures the flow of meth running threw it, if that flow falls below X amount, it can open your blow off valve, reducing boost, hence putting your car into "limp mode". This system can also illuminate a LED in the cabin to let the owner know of the issue. There are fail safes that are much more intricate than the above as well, such that HPF uses, but that requires a standalone or piggy back type of ECU. These are able to completely switch the tune map to one that is either uses less boosts (turbo cars), cuts timing, injects more fuel, or all of the above. Yes, both cars (Drew's and Sticky's) haven't been driven thousands and thousands of miles yet, but from the claims that are being made about meth, they don't need to in order to prove it wrong. LBM and Sal are claiming that if you run meth on a car that is not tuned for it, the motor will blow. Well, if the motor was going to blow from the use of meth, that would happen within a very very short period of time, not over the course of long term use. |
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03-19-2010, 12:11 PM | #77 | ||
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03-19-2010, 01:38 PM | #78 | ||
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Another thing as far as I know the Meth went on that car the same time the bigger blower did and he only ran it for a few days, IMHO they are placing the blame in the wrong direction, HOWEVER they did man up and pay for the rebuild costs, I have a lot of respect for them for doing that, and the hardware on the kit is fantastic and it looks like the tuning from Sal and others is dialed in, from what I've seen they are very fast as well.
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03-19-2010, 01:40 PM | #79 | |
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03-19-2010, 01:45 PM | #80 | |
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Last edited by Kyoshi71; 03-20-2010 at 06:11 PM.. |
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03-19-2010, 01:52 PM | #81 | |
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I would love to tell my full side of the story but I think way too many people would be upset and I'm sure some people wouldn't be too happy if I posted up some emails on how the situation was handled.
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03-19-2010, 02:25 PM | #83 |
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Very interesting thread. I enjoyed reading the majority of it.
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03-19-2010, 02:31 PM | #84 |
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03-19-2010, 03:00 PM | #85 |
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Anyone?
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03-19-2010, 03:04 PM | #86 | ||
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Best regards, south
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03-19-2010, 03:17 PM | #87 | |
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03-19-2010, 03:21 PM | #88 | |
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I can't see things getting much worse than it already is.
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