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Snow Methanol vc-50 strange behavior

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methanol snow
6.2K views 2 replies 3 participants last post by  colewhateva  
#1 · (Edited)
Hopefully I can get some insight here since a lot of members are very informed. I had a sno-2135-brd kit which is specific to the Focus ST put on my car a couple weeks ago and I’ve had very weird things happening since it’s been on. My car is a 2017 ST3 and I did have a shop who I trust install the kit. The kit comes with everything you need including braided lines, the larger 2.5 gallon tank, the selonoid upgrade, the in-line filter, throttle body adapter and the vc-50 gauge
Alrighty so the first issue I noticed was my boost on the gauge is not even close to actual boost the car would get, it is very inaccurate. It would show vacuum and boost at idle sometimes and I’ve seen it go past 30 psi. The vc-50 Gauge I have uses a pressure transducer which is essentially an electronic sender to sense the boost. I did a symposer delete and used the port for boost reference. A week into having the kit I had issues with car starting and my tank seemed to be going down quickly so I inspected everything which looked fine. Then one day the gauge stopped showing boost completely. I found out the pressure transducer is only $20 on Amazon, very strange since Snow says the replacement is $170….. the next day got a cel light after the car stalled out because the system just started injecting meth at idle 😳 Fortunately I turned car off and ran it and everything seems fine, thank god because it could have locked my motor. Later that night I did notice the selonoid was before the pump so I moved it t after pump in case I was getting siphoning. I also was getting boost with the new sender but the boost would go up to 30+ which is highly inaccurate. The gauge last night started blinking yellow indicatingthe tank was low, I checked and it’s over had full…
I have contacted snow several times and they want me to send Vc-50 gauge and sender to them. Ugh this kit has been a nightmare and I don’t trust it. Sucks snows policy is you pay shipping to them and they inspect it and they determine if it’s bad and send one back which they charge you shipping for again. Has anyone dealt with Snow or had any of these problems. We’re they resolved? I’m curious because I have $1300 in with labor on this kit and don’t feel like eating $550 in labor if I dump it. If it is the gauge I’m going to have to snip all the nice wiring the shop did and send it off to snow and just wait. Hope anyone on here has some thoughts. Thank you
 
#2 ·
I want to reply this post because this is the same issue I’m currently having on my BMW M4. I’m using the same controller and it doesn’t read the boost right 10 psi less . More why I’m replying because the same thing happened to me twice where the meth just pumped on idle for no reason and it didn’t stop.Luckily my meth sprayed into my turbos and intake side shut the car down but I opened up charge pipes and revved out the water/meth(boost juice ) but it’s very disappointing that these issues are happening with apparent high quailty kit. I could have potentially locked the motor as the meth pump just stayed on and never turned off. Some cars have more potential to fail if meth were pumped this way so anyone shopping please beware.
 
#3 ·
Is it possible that these pressure sensors are reading absolute pressure instead of 'boost' pressure?
I have no experience with WMI so I don't know how the control mechanism works, but it seems to me like it would be easy to mix up the two. If the reading was absolute pressure it would be around 14psi (altitude dependant) at idle and could be as high as in the 30's psi (also altitude dependant) at peak.

Personally I don't like the idea of having a system like this that isn't controlled by the ECU. One failure can wipe your motor out. Its all up to Chinese electronics :sick:. Not good for a daily driver situation in my opinion.