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SRT10x3 said:
I am not an expert, but I smell bullshit. My BS detector is usually right, so feel free to correct me if I am wrong. My girlfirend has been doing it all weekend anyways, so what is one more "you're wrong" heaped onto the pile.

If the fuel pressure is related to the SC then it isn't always at 100psi, isn't the pressure directly related to demand. Barring that, if a fuel line ruptors at 40-50psi versus 100psi mathmatically what is the difference in time that it will explode, and/or the distance fuel will SPIT/SPEW/SHOOT somewhere (Jack, come on, $19.00 here on the line if you solve my math problem) :)

BTW, I jacked up my Water pressure from 40psi to 80psi, none of the pipes in my mobile home have busted, going on 10 years now, nor has my toilet shot up from the floor :)

Craig
craig i agree. if he doesnt like the fuel pressure,then why dosent he put in a VEC2 and change pulse modulation, by varing the percentage of available pulse time you can enrichen the AF as needed, not to mention you can alter timing, reference all timing and fuel via manifold pressure.it is almost as if this guy DOSENT want to fix his problem. by the way, what self respecting tuner/installer wouldnt moniter boost on the dyno? you may even have a bad dump valve for all you know. you observations are all from assumptions and you have no evidence to support anything. what gives?
 

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SRT10x3 said:
If the fuel pressure is related to the SC then it isn't always at 100psi, isn't the pressure directly related to demand. Barring that, if a fuel line ruptors at 40-50psi versus 100psi mathmatically what is the difference in time that it will explode, and/or the distance fuel will SPIT/SPEW/SHOOT somewhere (Jack, come on, $19.00 here on the line if you solve my math problem) :)

BTW, I jacked up my Water pressure from 40psi to 80psi, none of the pipes in my mobile home have busted, going on 10 years now, nor has my toilet shot up from the floor :)

Craig
Craig,
You are correct the fuel pressure is not continually at 100 PSI. The Fuel management unit regulates pressure to stock levels untill the system comes on boost. This on boost condition is also very brief. The injectors are still within their design limits at 100 PSI. There are some high performance EFI applications that are running 135+ PSI under heavy boost. I have seen fuel pressure regulators that have frozen in the closed position. This will run the pressure past 160 PSI. I have seen no O ring or plumbing failures when this has happened. The engine did however run very rich if it ran at all. You know immediatly that something is wrong. If a big fuel leak occurs the engine will stop running as it does not have fuel pressure, at that point the PCM senses a no run condition it will shut down the fuel pump relays. The booster pump will actually take a lot of the load off the stock fuel pump as the high pressure pump is doing most of the work. The stock pump just acts as supply pump for the higher pressure pump. Regarding accidents, all modern vehicles have a "crash" switch that shuts off the fuel pump relays if there is an accident. If someone is that apprehensive about a fire hazard he can;
1. install an onboard fire system
2. quit driving
3. install himself in a plastic bubble
4. quit living
I personally will do none of the above as I believe life is an adventure and should be lived with all the enthusiam that I can muster every day. I enjoy life and part of my life is hot rods. Foolish chances are not part of my daily life nor is paranoia.
High performance vehicles do require more maintenance that my neighbor Bob's Hyundai. I understand this and perform visual inspections on my hot rods often. I am looking and listening and smelling as to what is happening every time I drive a vehicle. My own experiance has been good with the types of fuel system mods that we are talking about on this thread.
.........Jack
 

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We'll lighten the atmosphere a little

Ya know FSTJACK..this guy is starting to sound like one of my old girlfriends, always wishing this wasn't happening to me... :rolleyes:
I think I have a pic.......................... :eek:

:cool:
Quick;-D

p/s: this is kinda for you to "Roktman" I knew you would like her ;) LOL
 

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QUICKSILVER said:
Ya know FSTJACK..this guy is starting to sound like one of my old girlfriends, always wishing this wasn't happening to me... :rolleyes:
I think I have a pic.......................... :eek:

:cool:
Quick;-D

p/s: this is kinda for you to "Roktman" I knew you would like her ;) LOL
That first shirt is like the one I bought for the guys wife I was dating this summer. :eek: "If only these were brains"I asked her what size shirt she wore and she said medium,small if want it to fit good.The best 36 C`s money can buy($5800.00) on a 5`3 115 # gal. :D So hard you could bounce a quarter off `em.Now back to our regularly scheduled program.



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Pressure UP!!!!!!!!!!!

QUICKSILVER said:
Ya know FSTJACK..this guy is starting to sound like one of my old girlfriends, always wishing this wasn't happening to me... :rolleyes:
I think I have a pic.......................... :eek:

:cool:
Quick;-D

p/s: this is kinda for you to "Roktman" I knew you would like her ;) LOL
I know with the kind of boost happening here my plumbing is straining or is that staining?...........Jack
 

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Discussion Starter #28
Problem Solved.

Power delivery stabilized once the Intake Temp sensor was removed from the intake charge pipe as suggested by the kit manufacturer and placed on front of the radiator ala ambient temp sensor

No knocking on 95 octane with this approach, the truck is a 2004 and boost is steady at 7.5 psi!!.

We have seen only a power loss of 7 to 10% due to heat soak across the intercooler system on the dyno.

Simple math, the PCM can´t read that much heat generated by the novi 2000 system on the intake charge it will pull lots of timing, even more when the truck is warm at 205F, I wonder how many HP you will increase guys, and it seems pretty away from knocking.

Thanks for your attention, shut that hole on the intake charge and change the IAT position so it reads colder, its not the best solution but it will work even beyond 210F of water temp

DJ

I won´t discuss anything more with you about the fuel pressure, its very simple to understand why it is hard to push a system 200% beyond his rated capabilitie, and you just make a stupid laugh about it, that´s why maybe you can´t even feel the timing diferences in your truck with your supercharger blowing hot air trough the IAT!, keep that truck at 105 psi for more than 5 minutes on the dyno, OF COURSE IN FULL TRHOTTLE, just keep and eye on the fuel pressue gauge let´s see if that´s makes you comfortable and you won´t look after a fire extinguiser before doing so.
 
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