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Top 2GNT Technical Turbo/Nitrous Tech topic #66163
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Subject: "Would a Zener Diode work?" Previous topic | Next topic
extreme97ntFeb-29-04 12:22 PM
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#66163, "Would a Zener Diode work?"


          

I am sick of the gay hickups from no boost to boost. Can I just put a 4.7V zener diode from the map sensor signal to the ground?? Would I have to worry about frying anything. The other thread was talking about simple solutions well this is the simpleist I could think of.

best time so far 14.3 @ 101.1mph(no traction)
fastest 2GNT with a hitch! until proven wrong...

  

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Teamner947Feb-29-04 12:50 PM
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#66164, "RE: Would a Zener Diode work?"
In response to Reply # 0




          

zener diodes are harder to find in values too far from 3 volts. the natural voltage zener diodes want to function at is around 3 volts. this initial condition makes it more expensive to begin with.

second, you'd have to find a zener diode made with the right accuracy. since a zener diode is chemically very similar to a transistor, depending on things like tempature and current draw the exact voltage level where the zener diode clips at can change.

also, zener diodes only come in cetian pre-manufactured voltages.

i just did a brief search on DigiKey, they have diodes with voltage raitings of 4.3 and 4.7 volts. those are the 2 closest values.

4.7 volts is kind of high. i usually get fuel cut between 4.65 and 4.67 volts.

you're welcome to try it, i don't think it's a good idea mainly because there's too much room for error in this "use 1 discrete component to solve the problem" solution.


2016 WRX STi Limited (current)
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extreme97ntFeb-29-04 12:57 PM
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#66165, "RE: Would a Zener Diode work?"
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OK, Thanks for the quick reply. It looks like I will be hitting up "The Shack" tommrow to end this BS once and for all. Any tips on building the circuit in your previous post??

best time so far 14.3 @ 101.1mph(no traction)
fastest 2GNT with a hitch! until proven wrong...

  

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jsupetranFeb-29-04 01:20 PM
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#66166, "RE: Would a Zener Diode work?"
In response to Reply # 2
Feb-29-04 01:20 PM by jsupetran



          

Make sure to share when your done!!! emoji

It's weird cause some days I am getting fuel cut at 0-1 psi, and some days none. emoji

-------jezreel
hrc stage 1, sfmu, ml, prokits, egt, boost gauge, apexi tt, turbo xs rfl, haydans tranny cooler, costum dp, dr. uber groundwires, dynotune fp gauge. gst muff, turbo spoiler

nothing like driving with the windows down and the music low: i love hearing the turbo spool, swwwhhhttt!!!!
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MrSlickMar-01-04 12:07 AM
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#66191, "RE: Would a Zener Diode work?"
In response to Reply # 0




          

Originally posted by extreme97nt
I am sick of the gay hickups from no boost to boost. Can I just put a 4.7V zener diode from the map sensor signal to the ground?? Would I have to worry about frying anything. The other thread was talking about simple solutions well this is the simpleist I could think of. best time so far 14.3 @ 101.1mph(no traction) fastest 2GNT with a hitch! until proven wrong...


I use a Zener diode... works perfectly...
But you need to pick the right walue... I limit my map signal to around 4.55V.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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extreme97ntMar-01-04 07:08 AM
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#66204, "RE: Would a Zener Diode work?"
In response to Reply # 4


          

Well I fixed the hickup. I used ner's method I could not find a suitable zener diode.

best time so far 14.3 @ 101.1mph(no traction)
fastest 2GNT with a hitch! until proven wrong...

  

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