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08-21-2011, 09:53 PM | #155 |
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08-21-2011, 10:51 PM | #156 |
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08-21-2011, 10:57 PM | #157 |
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Nearly took your bait! No comment... So back on topic. Kenny, when are you going to get a 1/4 mile time?! Last edited by BBK; 08-21-2011 at 11:03 PM.. |
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08-21-2011, 11:38 PM | #158 |
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08-22-2011, 03:37 AM | #159 |
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08-22-2011, 08:12 AM | #160 | ||
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I'm keen to see what times you're putting down Edwin. I'd like to hit the drags soon but I'm embarrassed to run my wipers whilst going WOT down the quarter lol. |
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08-22-2011, 06:16 PM | #161 |
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BMW86,
Your setup is the same as 90% of the setups out there. It is safe.. no problems there. The diffference with the new systems is in the way the meth flow is controlled... not in the safety. The new systems allow the flow of meth to be more accurately controlled and tuned to the engine requirements. The system you run will run the same meth at 3000RPM at full boost as at 6000RPM even though the engine is consuming almost double the air at 6000 then at 3000. This is not an issue with smaller jets which are not flowing that much meth anyway. It becomes an issue with bigger jets/larger turbos etc. when you have to set the meth flow up to max for high RPM, but you end up getting too much flow at low RPM which can cause drivability issues due to meth bog/quench. My experience is that this is much more of an issue on a manual transmission as the throttle closes for the gear change, but the meth keeps flowing and pools up behind the throttle and then dumps in when the throttle opens. I am sure your setup will be perfectly fine for your application once you can sort out the flow issues you are having. |
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08-22-2011, 07:06 PM | #162 | |
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As for the safety, BMS is providing extra protection with the introduction of a new wire that connects from the FSB wire to the ground. This only came out today. It's not needed but it's a recommended and free upgrade. It does give me more piece of mind, especially since my kit is not fully functional just yet. |
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08-22-2011, 07:18 PM | #163 |
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The new Vishnu kit has twin jets. I believe they would be equivalent in size to CM7s. It sounds like you are consuming alot of meth as you are cleaning your windscreen when on meth!!
Sounds like BMS have found a grounding issue with the FSB. With analogue signals such as the failsafe uses, you need to have a common reference signal ground at the source of the signal and the destination for the signal. Sounds like they are fixing that up. |
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08-22-2011, 07:54 PM | #165 | |
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BMS said there is no grounding issue but the additional wire to the FSB installation to increase the voltage surge protection to the FSB unit. A few faulty FSB have showed up so I understand it's extra protection. Anyways, will read up more on this new meth kit, does sound very interesting |
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08-22-2011, 08:27 PM | #166 |
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The BMS kit and the Vishnu kit are different in the way the meth is metered. There has been no cases of bogging in the midrange with MT. One important thing to remember is any reduction in methanol usage will be met with an equal increase in gasoline usage.
The fueling system is closed loop. If you inject more meth you simply use less gas and vice versa. |
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08-22-2011, 08:30 PM | #167 | |
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08-22-2011, 08:45 PM | #169 |
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JB4135,
I have actually never had a meth bog quench issue with any Vishnu meth system. This is because I have never used a Vishnu setup with large jets. The car I am running into issues with is a cooling mist setup with large jets. It would probably be fine with normal size jets. I am not knocking this system, as I am sure the gen 1 Vishnu system with the same jets would have the same problem as it works in the same way. It is a limitation of first gen type systems that run full meth flow at low RPM. If you hold it under load on the dyno at 2000 for more than a second or so in the preramp before a dyno run starts to ramp to get to full boost, it will completely break down and fall over and you have to pull out of the dyno run. This is at 12+ psi at 2000RPM with recommended min/max setting of 8/12psi. To be clear: I am not saying the cooling mist is any better/worse than any other system that works in the same way. It is just a problem with large jets running full flow and low RPM, and there is evidence of many others having similar issues if you search the forums.... some with smaller jets. So please note that I am saying that I have only experienced this with large jet setups, and have never experienced this with the typical sized setup that most people run, so most people are fine with this system. You are completely correct that the fuel system is closed loop. This means that regardless of the presence of meth, the DME will attempt to get to the same AFRs. The issue is that it is is possible to put in so much meth that the DME has pulled all the fuel it can, and the mixtures are still too rich. Further to this, meth is harder to burn than petrol, and therefore it will cause a missfire more easily than petrol at the same AFR. This missfire is the cause of the bog/quench. Even further to that, the DME has long and short term fuel corrections. If you squirt alot of meth so that the DME pulls petrol to get AFR targets, the trims will be effected by this, and it will take some time for them to recover which can give some drivability issues. Techically you are correct that the meth you are using is saving you petrol, but I have not met anyone that would rather fill their 5L meth tank than their 50L fuel tank. Especially considering that you will not use the meth system unless in boost, so it will have negligable effect on petrol usage, but may mean you have to fill up the meth twice as often. Adrian |
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08-22-2011, 09:11 PM | #170 | |
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Legit question here... What size nozzles are you talking about where it starts to bog? |
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08-24-2011, 03:09 AM | #171 |
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08-24-2011, 04:55 AM | #172 |
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Forgive me if I am not jumping at the bit to answer you. You take every opportunity to make life hard for me, and now you want to be involved in a discussion with me. I am concerned that anything I say may be used against me.
The car has twin CM10s. As I previously stated, it is more than most people use, so not a concern for most people. But I can assure you that when running 18-20psi with big power, the engine loves that extra meth flow up top, but hates it down low. I highly recommend a system that can control meth flow with RPM if going for big nozzles/power. The Vishnu PWM Meth is the best on the market for doing this. |
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08-24-2011, 05:38 PM | #173 | ||
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But I only asked for what kinds of nozzles are causing the bog down low, I never asked which system is best... I am not getting into these arguments again, but just to point it out, that is why I continued to 'pick' on you because of unnecessary sprukes like this... |
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08-24-2011, 05:48 PM | #174 |
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Do you think I would have added on that last sentence to anyone but you... lets just say I am testing the water. Part of the reason I am here is to spruke, and I don't have to answer to you to do that. Aside from that, what I said is true. The Aquamist/Vishnu high speed pulsed PWM meth injection system is unquestionably better than anything else available, and anyone who knows about this sort of thing and does not have a bias would agree. I am trying to inform the market of the benefits. The market does not learn about the product telepathically.
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08-24-2011, 06:06 PM | #175 |
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I'm putting it out there that it's really hard for me to not get into this!
I wrote out three comments before deciding to suck it up and let it go... wow... feels good! |
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