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08-20-2019, 01:31 PM | #1 |
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Need some members advice on Methanol injection nozzle location.
hi , guys
I finally decided to "GO" for the methanol injection kit. I noticed the general notion is to install it on a set of aftermarket charge pipes that comes with methanol injection nozzle bungs. But I noticed that it is more effective to install a methanol nozzle on the cold side of the boost pipe. BMW seems to follow the same logic on their M4 GTS water injection system although it is directly into the intake manifold, it is on the cold side. Whereas the majority of products locate it on the hot side charge pipe. I am already running a set of ESS charge pipe and don't want to re invest. BMS seems selling just the cold side j pipe but I am not sure if it has pre- installed nozzle bung for methanol kit. Also, it seems I need a dual nozzle set up but can it all mount on one j pipe? Any idea?
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08-22-2019, 10:33 AM | #3 |
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I think you are overthinking this. You already have good charge pipes with Meth bungs in them. By FAR, the easiest an effective way to do this is to simply pipe your meth into each bung and be done with it.
My story, As my build has increased in power via additions and ongoing work with F80Paul, I decided to add an E30/40 tune on top of the current methanol injection (100 percent meth via the charge pipes). Since I have crappy CA watered down gas, Paul told me we were basically getting all the power available from the base 91 octane source, and that I had to add another fuel source if I was looking for more power. While I had the intake manifold off (upgrading fuel lines and adding an inline ethanol sensor), I bought a VRSF J pipe with a bung and planned on adding a third nozzle there for the same reasons you describe. While planning the nozzle sizes, I ended up driving down to ProMeth and speaking with their head technician. He basically talked me out of the "cold side" injection due to uneven distribution of meth to the cylinders. They have done a fair bit of testing and found unpredictable flow due to manifold design (more meth in the middle cylinders). The most efficient way to inject cold side is to do Port Injection, but that is a much more involved process and probably unnecessary unless you are looking for HUGE power. What I DID do, was go up in nozzle size on the charge pipes (actually running dual CM 14s) based on recommendations from ProMeth and then acccounted for during the tuning process In summary, I'd stick with the charge pipes. Other than PI, that's what the vast majority of your S55 brethren have done with good results. YMMV |
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08-23-2019, 09:52 PM | #4 | |
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charge pipes~ !
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08-24-2019, 02:45 PM | #5 | |
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08-25-2019, 08:51 AM | #6 |
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This is what I did on my N55. Used an aquamist HFS-4 and their port injection kit. Worked perfectly and held up under 25 psi from a Pure stage 2 for 20k miles.
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08-25-2019, 09:11 AM | #7 | |
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08-30-2019, 03:07 PM | #8 | |
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Looks D.O.P.E ~!!! Does it require more maintenance since you have more tubes that are tapped into intake manifold? Also what type of adhesive did you use to fix the nozzles? Epoxy?
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08-30-2019, 03:08 PM | #9 |
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So you are using three nozzles total correct?? Did you purchase an aftermarket j pipe that had built-in Meth bung?
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08-30-2019, 03:34 PM | #10 |
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No, only two nozzles, one on the jpipe and one in one chargepipe. On the other chargepipe i used it to read boost to my VC-50 Snow Performance Meth control.
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Last edited by johnnyredgtr; 08-30-2019 at 04:28 PM.. |
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08-31-2019, 07:36 AM | #11 |
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Nope I just put a couple of in line high pressure filters to keep any debris that's gets through the filter funnel I use to fill the tank and then the low pressure in line filter before the pump. Yeah I drilled and tapped it for the bushings that aquamist sends with the kit then epoxied the bushings in. The nozzles screw into the bushings with an o-ring seal so super easy if I need to change nozzle sizes.
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09-01-2019, 05:47 PM | #12 | |
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I'm doing methanol injection via the chargepipes.
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09-01-2019, 05:49 PM | #13 | ||
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The absolute BEST is PI |
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09-01-2019, 06:39 PM | #14 | |||
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09-01-2019, 06:55 PM | #15 | ||||
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09-01-2019, 10:36 PM | #16 |
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The BMS J pipe has a WMI nozzle on it but the hot side chargepipe placement works very well on this application. The JB4 is able to monitor fuel trims in both banks and one of the safety systems that sets it apart from other "dumb" WMI systems is that it will disable meth/lower boost if it ever appears one cylinder is getting more fuel than the others.
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09-02-2019, 10:47 AM | #18 |
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You'll still get a variance for differences within the bank compared to the bank with normal distribution just a smaller variance. Also, the leaner cylinder will have increased knock activity and can be spotted that way as well.
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09-02-2019, 04:27 PM | #20 | |
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The specific thresholds for safety switches based on trims, timing drops, etc, would depend on the firmware and settings. You'd have to contact BMS with help on setup for that based on your specific needs. On nozzle placement as stated I've seen better results with the hot side placement and that is what we suggest for most WMI applications. |
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03-09-2020, 05:08 AM | #21 |
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You have any pics of your set up. I bought a stage 3 Snow P Meth kit. I have VRSF CP and J pipe. I’m looking at doing the same. I have Mosselman turbos and trying to hit 700.
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03-09-2020, 01:09 PM | #22 |
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I don't have a pics but, i only used one of the Chargepipes for meth and the other is for boost on my VC-50. I will try to take a pic. The 2nd noozle is in the jpipe.
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