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FPSS after the fuel noid?

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Old Nov 4, 2007 | 09:56 PM
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TPY2KWS6's Avatar
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From: Phila PA
Default FPSS after the fuel noid?

I know the norm is to mount the FPSS on the schrader port and the plumb to the fuel noid but I was wondering if it was possible to mount it on the outlet side of the noid so as to eliminate any chace for a lean spike and kill the nitrous in the event of a noid failure? Are there any probs with this idea? Has anyone tried it? Would the pressure be the same on both sides of the noid when the kit is active?
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Old Nov 4, 2007 | 11:59 PM
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Can't do that. If you did, the system would never be active since you wouldn't have fuel pressure on that side.
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Old Nov 5, 2007 | 12:32 AM
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Maybe there is some way to make the FPSS only kill the nitrous noid, and not the whole system?
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Old Nov 7, 2007 | 08:34 PM
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Originally Posted by Jogar80
Maybe there is some way to make the FPSS only kill the nitrous noid, and not the whole system?
Yeah thats what I was thinking. If you use the fpss between the arming switch and the trigger coil on the nitrous relay, you have it activate the nitrous solenoid slightly after the fuel noid is active. Obviously you would need to run a separate relay for the fuel noid.
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Old Nov 8, 2007 | 05:27 AM
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I did exactly what you are talking about and it worked great.
Here is a thread where I logged AFR during some raceses before and after.
https://ls1tech.com/forums/showthrea...t=#post7201403

This was on a direct port, and it worked great. I've never done it on a single fogger nozzle system. My guess is it might overcompensate, but its probably worth trying.

Vinny
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