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nissan??? whats that
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tony200 said:
i need to find out where the stock pressure regulator on 98 nissan 200sx is.

thanks
look at where the tube on the right side of the engine is that leads to the airbox/cai etc... where it connects to the engine look up about 3 inches..its the little metal circle with metal lines leading to the TB and to else where..


looks some what like this

shitty pic but you get the idea
 

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nissan??? whats that
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im not sure how to adjust it nor do i know if the stock one is even adjustable but i wouldnt recommend toying w/ it unless you upgrade other fuel components such as injectors and fuel pump..etc
 

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Destroyer of Engines
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The stock one isn't adjustable. There is no reason to raise the fuel pressure unless you have an ECU programmed to use a higher fuel pressure. Otherwise you're just adding lot of extra fuel and wasting gas.
 

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Wise Cracker
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tony200 said:
guys i have a stillen adjustable fuel pressure regulator.
HUH? Dude you don't know where the stocker is and you have a stillen adjustable regulator? Anyway why do you have an adjustable FPR? You realize that if you raise the FP you will likely lose HP? Or that if you lower it too much you can run lean? Honestly without big mods. it is kind of a waste as to adjust the pressure correctly you need to use a wideband O2 sensor to see where your AF ratio is and adjust it from there. Otherwise the stock FP is fine for what you are running.
 

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Discussion Starter #10
well HUH dude i just curious. i know not to raise the fuel pressure too high. i have other mods on also other than i/h/e. i would like to find out what psi should i set it at?

thanks
 

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Powered By hopes & dreams
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Like Wes said, you should leave it at stock pressure.
 

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listen im trying to find out information about the fuel pressure regulator. for the setup im using, its a zex wet system. i would like to put in a walbro 255lb pump as well to make everything safe and run right . so i was seeing if i could turn up the pressure to at least 47 psi to run a good mixture. is this possible? cause running a 75 shot does require modding the fuel.
 

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Wise Cracker
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tony200 said:
listen im trying to find out information about the fuel pressure regulator. for the setup im using, its a zex wet system. i would like to put in a walbro 255lb pump as well to make everything safe and run right . so i was seeing if i could turn up the pressure to at least 47 psi to run a good mixture. is this possible? cause running a 75 shot does require modding the fuel.
My question is how does the zex wet system add fuel? If it has a setup to take care of it why would you want to add the walboro and raise the FP?

You can raise the FP but I think the walboro pump is not necessary. You will not make over 200 WHP with the 75 shot and the stock pump can handle about 200 WHP.

And honestly you should start a thread about this in the nitrous forum, you may get more/better input on this.
 

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Discussion Starter #18
please excuse my comment wes but what makes you think that i wont hit over 200whp with a 75 shot? just out of curiousity.
 

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tony200 said:
please excuse my comment wes but what makes you think that i wont hit over 200whp with a 75 shot? just out of curiousity.
A fully bolt-on GA16DE makes about 115WHP (90WHP stock). A 75 shot adds about ............ [wait for it] ................ 75WHP. That adds up to 190WHP max.

Lew
 
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